Head to the washroom to jack it.

You use your reasoning skills to determine the best way to work out these urges without upsetting Celina. As quietly as possible, you slide out of bed, slip through the doorway, and head into the bathroom. Smooth moves. Closing the door behind you, you slide your boxers off and direct yourself to the toilet.

You think of Celina and give yourself a nice, hard, jacking. You bring yourself up to cum much more quickly than you'd normally expect to, and you lift up the toilet seat to get out some nice long shots, because you can tell this is going to be a big one. "Oh... yeah... Celina..." you mumble to yourself.

Just before you release, the door of the bathroom swings open and Celina marches in. Before you can consider her terrible sense of manners, you start screaming.

"Holy shit! Shit! Get out of here! Come on!" You scream at her.

Celina screams a high-pitched note and runs out of the room as quickly as she came in, slamming the door behind her. You have no idea what goes on in the mind of that girl. Seriously. You assume she's gotta be frickin' messed up, somewhere.

Everything goes quiet again. You decide that you are going to attempt to play it off as if nothing happened. You finish squirting your load into the toilet bowl, flush it down, clean yourself off, pull up your boxers, and give your hands a wash. As soon as you open the bathroom door, you see Celina standing right on the other side of it. She looks upset, and somewhat concerned.

"I... I'm sorry I interrupted you. I just wanted to check on you. You sounded like you were having trouble in there... Making a lot of noise... I wanted to see if you were okay..."

You give her a look, and you hope it elicits a message of "ARE YOU FOR REAL?" at her. She doesn't seem to get it, so you assume she's being completely serious.

"Uh... okay, I'm fine... thanks." You quickly walk past her, back into the bedroom, and lay in the bed like nothing happened.

She walks in and stands there for a second, staring at you. Then she asks "What was that thing you were holding?"

You're confused, but you try and play it off. "Nothing, I wasn't holding anything."

"Yes you were." she stomps over to you, and before you can react, she's pulled down your boxers.

"This. What is this?" she furiously grabs your cock, which is limp on account of you just lettiing one loose, but there's still some semen on the tip. It gets on her glove and she pulls her hand away, smelling it before she strips her glove off.

"You honestly don't know what that is? You have to be kidding me." You ask, just as confused as her.

"No. I'm... concerned for you, and I want to know what this abnormal growth is from."

Looks like she's got no manners, and no common sense, either. Lacking in both. You might have to start explaining basic knowledge to her.

"What. Is. That. From?" She points at your cock again. You can't believe it, but she's actually serious.

...And she's demanding, when she wants to be.