A funny phrase that is used as an annoying come-back. The phrase, saying it word for word, has no meaning. People usually will say it when they can't come up with a good come-back, or if they don't know the answer to your question.
Person 1: Hey, what do we have for homework?
Person 2: Ur mom.
OR,
Person 1: What does (word) mean?
Person 2: Ur mom.
1. (phrase) Contraction for "fucked your mom". Used when one does not have a witty comeback handy. Can be countered with "chur mom harder", but then "chur mom hardest" wins. No triple stamping of a double stamp or anything of that sort. "Touché." is then said bye the loser to recognize the supremacy of the relatoins had with his or her mother.
2. (noun) another way of saying your your mom.
1. A: "Chur mom in the butt."
B: "Chur mom harder in the butt."
A: "Chur mom hardest in the butt."
B: "Touché."
2. "Hey where's chur mom at that bitch hasn't given me a rim job in at least two days."
Aphrase which, if used correctly, can be a highly amusing insult. Often used as a come back but can sometimes just be used for the sake of it. It is not a good idea to use it on one of your siblings though as can back fire very easily.
E.G 1
Teacher: John tell me a vital condition needed for successful fractional distillation.
E.G 2
John: Hey, Jack!
Jack: What!
John: Your mom!
Jack: What the fuck!
John: Your mom.
Jack: Fuck You
John: Fuck your mom
Jack: Leave me alone
John: Only if you leave your mom alone
Etc...
E.g 3 (At a job interview)
Interviewer: So john what is your main interest
John: Well i am going to have to say...ermm... Your mom
John: OMG! You'll never guess what hapened to me yesterday!
Jack: What!
John: Your mom!
Passer By: OOH OOH You got owned!!