"Wait," you cry out, stopping the giant in his tracks.
"Foster, for the love of God, don't do this to yourself. I don't want to hurt you." The big man looks over his shoulder, eyes narrowed to menacing slits. "Let this happen. I mean it."
"Just - just come back and let's talk about this."
Eric turns on his heels and starts toward you, rolling his mighty shoulders. "Talk? You want to talk, little guy?"
"Y-yeah," you stammer, backing away, "we c-can figure this out. Think about it, m-man, please. You can't - you can't go after E-Emily or they'll lock your ass up."
"How are they gonna l-l-lock me up?" Your friend's tone is viciously mocking. He stares you down, his erection fading.
"Please, Eric, p-please don't. Just, I dunno, jerk off and then - then maybe you'll start thinking clearly again. You'll see what I - what I'm trying to tell you."
"Are you serious? You want me to jerk this thing off? Fuck, with a dick like this I'll never have to jerk off in a million years. Women will be lining up for miles, including that sexy little slut of a sister you got. Both of them, actually." The behemoth stirs again as Eric's gaze drifts past you. "I'll split them both in two, stretch them out 'till they're no good for anybody else."
He really has lost his mind. In a moment of pure desperation, you swallow hard and grab the monstrous shaft through the taut basketball shorts. Eric grunts while thrusting his hips forward. You've done it now. The big man looks upon you with wide, hungry eyes and grins.
"Really, Foster? You want to play that game?"
No, you don't, but you can't let him touch your stepsisters. That can't happen. Bending slightly, you pull the shorts down so that the thick, veiny cock hangs free like nothing you've ever seen before. It's gotta be sixteen inches long, thick as your wrist, and so warm that you can feel the heat radiating from it well before you get your hand on it. When you do, you find that your middle finger and thumb are an inch from touching.
"Alright," the man groans, his face screwed up with sadistic pleasure. "Let's see what a little guy like you can do, Foster. You've never played with a toy this big, have you?"
Ignoring his words, you close your eyes tight and begin stroking the length of his imposing erection. This isn't going to work. It's too dry, only a thin layer of sweat acting as lubricant, but that just makes the skin stick to your palm. You give him one last tug before running over to your desk to pull out a bottle of lotion from the bottom drawer. Your secret stash. While you're in there, you grab a handful of tissue to catch the inevitable load.
"Good thinking, pipsqueak," Eric chuckles. "Good boy."
A glob of the cold lotion in your palm, you take hold of the boy's cock again, only this time you're determined to get the job done and over with as quickly as possible. It's a herculean task with just one hand, so after a minute you wrap the other around it as well, leaving a couple inches between them. Soon both arms are weak, then the cramping starts. This was a stupid idea. Eric seems to be enjoying himself, at least, his hips moving in time with your strained efforts. Precum dribbles onto the carpet in little beads. It can't be much longer, you tell yourself. This becomes a mantra. Not much longer. Almost there. You can do this, you know you can. You have to.
"Fuck," the giant whimpers, running his left hand through his hair. You see his right hand grip the remote tight, then you shut your eyes again, repeating the mantra over and over. It must be true with the way the monster twitches and shudders.
"Just a little longer. Come on, you've got this. Just pretend you're doing this to yourself." A silly thought, no doubt about that, seeing as how this thing is at least three times larger than your own average dick, which has been repeatedly stiffening against your will this whole time. That's the thing. If you pretend that you're doing this to yourself, that you're only jerking off, then it doesn't mean anything that it's turning you on a little. There's no shame in that, right?
Just when you think that Eric is ready to bust, your fingers and thumb slowly pull away from each other. No fucking way. This bastard, he wasn't even fully erect yet? You open your eyes, heart racing, and find that...