Person one: What are you talking about? Humans breathe air!
Person two: Oh yeah, well, ur mom
(Person one shoots him/herself due to the shame and humiliation)
Ur Mom (Yoor' Mäm) n.
A way to let your home dogs know that you are sexually attracted to their birth mother leaving them with confusion on what you actually meant by this. Any bystanders will then outrageously yell ohhhhhhh leaving them with more confusion than the conversation started with.