Top definition
Extremely functional in an incredibly bad-ass and/or cool and hip way.
That program that Larry wrote is one motherfunctional piece of software!

Arlene's husband ran into the hot water heater AND fixed it all in the same day. That is one motherfunctional dude!
by The Original Pez April 04, 2008
Get the mug
Get a motherfunctional mug for your boyfriend Vivek.