I won't say which one, on account of privacy and just simple respect.

This person, every time they finish a bite, will make that noise that some people produce when eating a banana. That really gross, "opening your mouth sound" that happens, well, when you widen the inside of your mouth before opening your lips.

It's really frigging irritating; actually, it's bothered me a lot over the past week, to the point where I've had two nightmares in two nights about them, one time being in the kitchen (haha).

Yikes.

I want to tell them. This person, however, is the kind with the "just ignore it" philosophy, so I have no idea how to break it to them that they sound like a piggie when they eat.

Can anyone offer tips?