"You..." Snake was enjoying this, wasn't he? He was taking advantage of the situation. UGH.

"Are you messing with me? Listen, you're the one who pulled my head onto your lap! You did that all by yourself!" Heiji was just a helpless bystander in this scenario! He couldn't help it if Snake was some kind of... lap vigilante, ruthlessly manhandling feverish poisoning victims who couldn't defend themselves!