a person who's mean and his (yes his only men are ugly) face looks like a sack of balls
"ew what, you like nick!? hes such a sack gesicht"
This is a slur for a Giga Star Wars Nerd.
"Hey that dude is such a Mattia."
"Hey dude you can't say, he just likes Star Wars."
A person that puts his dick in his own asshole.
"Amcuk"
"Yeah duhh it's why i got some ribs removed."