Which is why he's weird. I'm betting he has some kind of sac near his stomach that he uses to swallow air/people when he... y'know... sucks in air/people.
...you said I should look for pictures of macrophilia, and I said that if I wanted to kill myself I'd do it with fast food, implying that I DON'T want to kill myself in the way you suggested, i.e. by Googling macrophilia.