Your mom

Your mom is a joke that college students say, it is not to be confused with "yo mamma", but it is just used in place of a noun of a sentence someone said. For example, my friend says "I got all my homework done." I would say "YOUR MOM got all her homework done." If I say "I like playing electric guitar" my friend says "YOUR MOM likes playing the electric guitar." You can also use your mom when someone asks a who question. For example, "Who did this?" you would say "YOU MOM." I have capatalized YOUR MOM to emphasize that you have to say it with a retaliating voice.

Your mom originated from the movie Napoleon Dynamite when he said "Your Mom goes to college!"

It is said to be the "white" version of "yo mamma."