1. A yellow fruit that you peel and eat
2. Sometimes referred to as a cock
1. I just ate a banana
2. That is a very large banana you have Blair
by You can trust me September 2, 2014
Get the a banana mug.
Going on impulse, not thinking about an action before doing it. Often a tool of peer pressure to make someone do something.
by frankenstein and pals January 11, 2011
Get the banana banana banana mug.
Something people look up on UD when they're bored.
You know you're bored when you look up banana.
by nickel124 August 20, 2013
Get the Banana mug.
Saying something is crazy, ridiculous, or just plain balderdash.
Dee: It's my brother's fault, though. You're not going to believe this. He tried to convince me that you were retarded, what?
Lil' Kev: No, what.
Dee: I know.
Lil' Kev: That's bananas, girl.
Dee: You're not retarded, are you?
by Ernie on Crack August 22, 2009
Get the That's bananas mug.
A banana is a measurement of length. Its use became common around the early twenty-first century, and has continued to remain in common English ever since. The original banana was defined as a curved yellow fruit that was 17 centimeters long; due to the great famine and subsequent death of many species, one banana is now nearer to 14.5 centimeters. However, one ISO banana is still defined as 17 centimeters despite the unit commonly being described as 14.5 centimeters.
"Your son is now 9 bananas tall!"
"Let's hope he lives to be 12!"

"A miss is as good as 9466.738613880132 bananas." -- old proverb

"Dude's travelling at 2000 bananas per minute!"
by Matrixx January 11, 2014
Get the banana mug.
Banana, a subscriber of Onision who watches his videos so obsessively they begin to peel their own skin off while cannibalizing themselves to the point of death. Most bananas, aka onision subscribers Wind up dead or in the hospital due to the cancerous effectiveness videos. Onision must be stopped.
Guy 1, (Is a banana): "Hey, have you heard of Onision?" Guy 2: "Oh you mean the next Hitler?" Guy 1: *Kills himself*
by Ollie.Grey February 13, 2017
Get the Banana mug.