1. A thing people say if you have a british accent and someone asks you a question and you're:
1B. insulting somebody
1C. acting like you have a british accent on the internet and insulting someone/are bored
2. A thing that retarded people say and think that when they do they're cool
3. The most amazing phrase in the world, as it has been here for so long and it has not died out.
John: "Hey, I went to the movies today."
Ben: "Huh. So did I"
John: "So what movie did you see?"
Ben: "Ur mum. >:D"
Joe: "You're such an idiot
Sean: "Well, ur mum's so stupid she climbed a glass wall to see what was on the other side"
dudelizard1337: "WAIT?!?!?! WHAT DID YOU SAY LIKES TURTLES?
awesomeguy01: "Ur mum"
dudelizard1337: "wait... is that a bad thing?"
(same as 1B)
Johnny in 1975: "Ur mum's so fat she played pool with the planets."
Johnny in 2005: "Ur mum's so fat she... I got nuthin..."