Top Definition
1. When you miss hitting the nail with the hammer and end up hitting a finger and leaving a bloody mess.
2. When you seriously injure yourself.
1. "I was hanging a picture the other day, and fumblehammered my thumb. Before this game, I would have just swore. This time I yelled OUENDAAAAN!!! I think it helped more."
2. One day I fumblehammered my nuts on my bike after I jumped over a ramp.
by Siril Frein February 09, 2006
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.