[It takes Sollux half a moment to realize where Eridan's fingers are going. He's too chicken to actually shove his hands down Sollux's pants, it seems, but even though the pressure behind his balls feels good, fuck if he's going to give Eridan any indication that he gets to top.]

[So he pulls a full stop, grabbing Eridan's hip with his nails and keeping it still so he can't force the grinding back into motion. He bites down hard on Eridan's lower lip, grabbing his chin with his free hand. He runs his tongue along Eridan's mouth in a long swath and holds dangerous eye contact.]

You lotht all right to dominanthe when you couldn't get it up to get your dick thucked.

[And that smirk is probably more than a little bit cruel but he doesn't care, because Eridan starts these games, he can take the consequences.]

If anyone'th getting fucked, it'th you.

[He lets go of Eridan's hip and does what Eridan hadn't dared, sliding a hand down the back of Eridan's pants and jamming three fingers hard into the skin between Eridan's balls and his asshole. He nips at the other boy's neck as he slides the middle finger back to press dangerously, almost hard enough to push past the resistance of the muscles. He leaves the other two fingers where they were, pressing in hard enough to almost hurt.]