1 definition by Kathy Trans

It is an utterly bad insult to recieve. It is a similiar phrase to "your mom or you're such a tool." It means "massive mom." If you happen to recieve such a horrible insult please get over it as soon as possible.
You're such a idiot. You freaking mamo. I can't believe you're such a mamo.
by Kathy Trans July 6, 2005
Get the mamo mug.