Gamzee bites so hard into his lip he nearly draws blood in his excitement. He kisses the younger boy heatedly, then feels around for his pants on the floor, before finding them, so he can pull his wand out of his pocket.

"This might be feeling all weird and shit? It did when I was up and trying it on myself. But it ain't gonna hurt or nothing," Gamzee reassures Tavros, and then murmurs the spell, lubricus, as he touches the tip of his wand to the Hufflepuff's hip.

And suddenly, the smaller boy will feel a warm, slippery sensation inside him, leaking just a little out to trickle down the curve of his ass. Gamzee puts his wand aside, and looking down at Tavros, gently slides one finger between the other boy's legs, feeling for that (now well lubricated) pucker of muscle.