Uncommon but horrifying pet peeve...
I know many people hate people slurping and noisily chewing, but here it gets worse. My father eats messily(noise-wise, but it makes me think he also has greasy hands) WHILE using my laptop.
I mean, just think of it, someone is using something you touch almost daily while loudly chomping on some juicy, greasy ham?! It makes me want to tick a blade through whoever would do that... Not that I have homicidal tendencies, I just have a relatively short fuse...is it normal to be that pissed off?