Top definition
A word used when you are so tired that you can barely say 'tired.' It is basically a mumble.

Hab-fwam

Ha, like "hat"
Wam, like, "WAM!"

Note: proper grammar doesn't need to be used in a sentence containing the word habfwam.
I habfwam.

I's a habfwam.

Ughrrffm.. habfwam.
by Colin E. August 18, 2006
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