Your mom is a phrase used by people who are too stupid to come up with a answer to a simple question. Or don't answer it out of arrogance. This phrase is used a lot by spoiled
college boys who's mommy and daddy paid for their car, tuition and ipods.
Obviously they are mommy's boys since they
love their mommy so much they say your mom. They must
love their mommy so much. See mommy's boy