Make Mr. Liam join in.

You look at Mr. Liam, who's been **** to watch you skillfully fuck Colin to the breaking point. His own cock is straining against his pants, and he's sweating as his eyes are glued to your massive cock plunging in and out of Colin's rosebud. You pull of of Colin, and he makes a weak, whimpering little whine of protest. "I was so close..." he mutters softly, his soft cock dribbling the remains of his last load onto the desk. You carefully pull him up and towards you.

"Mr. Liam, take off your pants and lay on the desk." He does as you say, pulling his pants down with shaking hands, revealing a surprisingly thick cock. It's not as long as yours, but it's thick, uncut, and slimy with pre. "Colin, straddle Mr. Liam cowgirl style." Colin, with his shaky legs, does as you ask, though you're vaguely worried his legs will give out and he'll fall. He even puts Mr. Liam's cock inside without your saying. He's either broken or your powers work based on what you intended, rather than what you actually say. You'll test it out later. For now, you push Colin forward so that he's laying fully on your boss, his willowy twink body a contrast to Mr. Liam's chubby one. You smile and trace a finger around the edge of Colin's asshole, where your boss's fat cock is nestled. "Fuck him slowly, Mr. Liam." Mr. Liam lets out a low, rumbling growl as he does, his hands on Colin's ass, slowly pumping in and out. Your loads drip out around his cock, down his hairy balls, and onto the desk. He moans, his hands shaking.

You carefully position the chair beside the desk, and stand on it. You can now comfortably reach them both. With no warning and no preparation, you begin to shove your monstrous cock in Colin's ass while your boss fucks him. Colin's back straightens and he cries out, whether in pain or pleasure you can't tell. Luckily, your eager fucking and come make it easy to fit yourself inside, and his tight wetness and your boss's fat cock rubbing against yours has you all moaning. This is bliss.

You run a hand soothingly down Colin's spine. Seeing him so pliant and well fucked has made you a little fond of him, it seems. "You're okay, Colin, you can do this." Instantly, he relaxes his back and moans like the little whore you've made him into. You slowly fuck him, alternating your thrust with your boss's. "Tell the truth, Colin, do you like this?"

Colin's confession is punctuated with moans. "I do, I ohhhhhh fuck, I do, I wanted you to fuck me for the longest time, I really did, ever- ohhhHUUHHHh fuck- ever since you started working here, I just- nnNUUuuughhh- didn't want to admit that I'm gayYYAHHHhh- but I wanted your huge cock- I could always see it through your HUUHHGH work pants-"

You blink. Huh. Apparently the changes you made to your body are retroactive? You fuck him a little harder as a reward for being honest. "How would you like to be my little pet, Colin? Huh? Would you like to be my little ****?"

His face is a wrecked picture of bliss as you and your boss fill him fuller than he's ever been. "Oh fuck oh fuck yes yes please I'll be a good pet, I'll be a good little toy-" you feel him tighten as that thought pushes him over the edge. He squirms and keels- he apparently came dry and is oversensitive. You fuck him hard and fast now, and tell Mr. Liam to do the same. You both ravage his ass, splitting him open with your fat dicks. Mr. Liam's dick pulses and you feel his own hot load spill into Colin, and you follow it with another of your still- thick loads. You pull out finally, only to be surprised that both Mr. Liam and Colin are squirming and obviously oversensitive, but still fucking nonetheless. You never told them to stop.

You file that note away for later and release them from their torment. "You can stop now, and go back to what you were doing before we started fucking." There will be other times to play, after all. Colin lays across Mr. Liam's desk, his asshole gaping and leaking come. Mr. Liam dabs his red face with a handkerchief, shakily putting his pants back on. Colin's not ready to stand up yet, and- you remember with a wolfish grin- his clothes are back in your cubicle, anyway.