Gamzee himself is ridiculously excited that he's being allowed to do this, and he palms the smaller boy's erection through his pants, squeezing and watching Tavros's face eagerly.

"That's good, ain't it?" he asks, grinding up against the Hufflepuff's ass again and letting out a gasp of his own. "Like ... way fucking better than doing it yourself. Or. I mean, it is for me."

He bites his lip, gazing at Tavros with lust-dazed eyes.