...we bet our sizes?"

"Or maybe I should say lenth and grit?"

Your confusion is genuine as he proceeds with the explanation, a little surprised he has to explain it "I mean our dick size". You almost spit out your drink.

Faust lauths and continues: "You like the idea I see. Can't blame ya, who wouldn't want this" he pulls out his thong, revealing the monster cock beneath

He's only half hard and already 14'' long at least, towering over what any mortal could ever hope to achieve. At a little over 3'' diameter, if it were any thicker you would think it impossible to fit anywere. His balls are also large and potent, each of them quite literaly a handfull.

His size would be impressive just by itself, but compared to yours the difference is even more jarring. At 4'' lenth, you barely qualify as "below average", and you'd be surprised if anyone could even feel your less than 1'' thickness

Your peers allways envied you for how easly you managed to accept celibacy, but thruth is you didn't lose much. Even in the few times you "played by yourself" it was over before it even started, so you never had any chances of pleasuring anyone, even disregarding your size

Until now

A grin on his face as you practicaly drool at his cock, Faust asks "All in then? Winner takes all, loser gets 1'' so he can pretend to still be a Man?"

Better to not act too confident now and blow it. "I dun't kow, beeing 1'' the rest of me life sounds lik'a bad deal"

Your strategy works, with Faust doubling down towards his grave. "What if I make the spell permanent (unless the winner decides to give it back of course) but I can't take anything with me back to hell? Your gonna get your size back in no time even if you lose, but if you win, it's for life!"

This fucker is over 3x your size flacid and is willing to bet with these odds. He's gotta be the most overconfident guy you ever met. Either that or he's shure he's gonna win

Weathever, time to wipe that smile off his face. "I'm in!"