"Then I will have to remind you." He moves to grasp at his partner's hair instead, yanking him into a rough kiss. He wouldn't usually do this in public, but nobody cares about them- there are far saucier things happening in plain view than two men kissing.

He doesn't want Emet-Selch to forget. He wants him to understand that he belongs to Hythlodaeus, body and soul. More importantly, everyone else has to know too. They can't have Hades- he's taken.