Top definition
1. A severe mentally instable individual

2. A homicidal psychotic

3. Describing any event or action as very crazy or extremely insane

4. Saying "fucking nut" with emotional outburst or humorous purpose

5. The sexual act between 2 nuts or more.
You gotta be futnut if you wanna jump off the cliff!!!

He's a real futnut, watch out or he'll kill you!

Standing naked on top of Washington Moument is definitely futnut!
by Troy T October 13, 2005
Get the mug
Get a Futnut mug for your guy Trump.
Short for (or code for) the term fucknut. Can be used when cursing isn't appropriate.
That dumb futnut just cut off three cars while drinking a beer.
by futnuts June 26, 2010
Get the mug
Get a futnut mug for your sister Julia.