[He'd reply but he's being half choked and trying to press up against his foot. All he gets is a choked out sound the color on his face deepening from both the strangulation and the arousal from it.

Since there is no possible way he's going to be able to finish removing his pants with teeth in this state, he bring up his hands unbutton them and push the fabric down freeing his cock. And then he runs his tongue along the head of it. Well, as best as he can considering he's partially choking.]