A few experiments

He needed to know how the marker worked and now was a good time to do so. Making sure his door was closed and lock he sat at his table and thought about what to write. He didn't want to physically change his body unless there was a catch to this thing. He decided to go with something tame.

He lifted his arm and wrote 'HAPPY' and like that he felt happy, happier than he had ever been in fact. He moved to wipe it away when he froze, what if when he wiped it away it he could never feel happy again? Did he really want to literally wipe away his happiness.

Instead he wrote 'WILL'. he wiped away both marks then without a care. He had to be more careful with things like that.

Next he looked at his body. He wrote 'CLEAN' to see if it would indeed clean him. Sure enough he felt clean, very clean in fact, even the word had been removed. he worried about adventurous but saw it still there. Then he saw a problem with constantly writing on himself, people would see.

thinking about it for some time he had a thought and hopped he understood the rules well enough to pull it off. He wrote 'INVISIBLE INK' and suddenly it disappeared as did the mark. Now to test, he looked at where he wrote and thankfully it appeared he made it permanent. Now he didn't have to worry people seeing things like 'COCKSLUT' written on his ass.

He wasn't entirely sure why his brain took him there but the idea made his cock jump and an almost empty feeling from his butt.

Feeling horny now he was less careful but didn't want to risk his hornyness doing damage to him so he tested something else. He got off the chair and looking at it wrote 'DILDO'. More to see what would happen than actually wanting to see a cock, at least that is what he told himself.

As the word was finished the wood creaked and a phallus formed in the middle. It was only a little bigger than his and the ache in his butt grew softly. Before he could even touch it a knock came form the door. Again his hornyness took over and he just walked over and opened his door.

"Hey so the girls said it was fine..." Emily was standing in his doorway naked. Her eyes were not on him but having never had a chair dildo in his room before he didn't even think that is what she was looking at. She grinned at him. "Just that you have to follow the dress code. I already have some for you to wear so don't worry about it." She was still grinning as she closed the door for him.

He turned and saw the dildo chair and realised what she was looking at. He didn't feel embarrassed, if anything he felt hornier. He approached the chair again ran his finger along the wooden shaft. It was cold and dry. his tongue, with a mind of its peaked out of his mouth and licked it. It tasted like wood and he wrapped his free hand around his cock and began to stoke and his tongue explored the fake wood cock.

After jerking off so many time it didn't take long to realised he wouldn't be getting off quickly and with a cock at his lips he wanted to get off fast it felt more natural. He took up his marker and wrote 'RAPID REFRACTORY' he balls and cock sprung back to life and he made it permanent as well. As he licked the fake cock his rapid brought him close to orgasm. When he came he wrapped his mouth around the tip and sucked.

cooling off he wiped away the word and watched as the dildo disappeared. His butt felt less empty after cumming but wasn't entirely back to normal.

He sat on the chair and imagined what it would have been like only a moment ago. His cock raised again but he ignored it, he still needed to understand the marker.

He put it back to his skin and wrote 'SLIM' wanting to see how long physical changes would appear in him and since it was close to his body shape already he thought it safe. When he felt himself sink a little he realised with a lot of dismay that his ass was also slimming. He wiped away the word and felt his ass return.

He let out a sight of relief as he reached down and groped himself enjoying the feeling. He remembered Emily's hands on his ass and the sight of her breast. He felt a moment of almost jealously when he looked down at his flat chest. He couldn't resist and wrote 'A CUP' he felt his chest swell a little until little bumps appeared on his chest. He reached up and played with his new chest enjoying the feel before wiping it away. It was good to know that was easy but he didn't want them right now.

Thinking about his new life he realised he may have a solution to all of his uni problems. He took out his laptop and opened up one of his assignments that was due in a few weeks. He read through it, he didn't really understand it but he knew a bit. Next he grabbed a stack of paper and wrote 'ESSAY' the paper suddenly covered itself in text and he was at first alighted. until he read it and realised it rambled on about exactly what he knew and nothing more.

So he still had to learn even if he didn't have to any actual work, good to know.

Still looking at his laptop he considered researching the marker until he remembered rule 6. no one who has gone with out it for a day won't even know of its existence. He tried all the same and found an admittedly interesting bit about the history of language.

He had learned pretty much all he could think of right now. There was other thing, what would happen if he wrote on someone else. But he didn't know who, he could do anything to Emily she was his room-mate and friend, he might not be able to do anything to any, he was still meek, even if he was now sexually adventurous.

He looked at his arm and thought about what changing his meekness but it was a part of who he was, if he changed it he wouldn't be Alex anymore.

He capped the marker and decided to just mess around on the internet until Emily collected him for the party