It is the most common comeback against
a Yo Mama joke. Used
in an emergency when one can't think of anything to say. Using
it automatically results in Fail for being
such a lulzkiller. Please note that this is NOT the ultimate
Bob: Btw, can you get my wallet for me? I left it on your mom's dresser.
Drew: My mom is dead
Bob: That explains why she wasn't screaming