Top Definition
A really witty thing to say or call someone, even if you have no idea what it means. Because No one else does either.
You: "Knock Knock Mosacra!"
or
Friend: "Hey man"
You: "Hey whats up Mosacra?"
or
Friend: "Hey man"
You: "Hey whats up Mosacra?"
by HoveringCoyote
January 10, 2011
1 more definition
2
Anything and everything, nothing specific.
You mosacra!
That one bad mosacra.
That one bad mosacra.
by Lifesplitters
January 12, 2011
