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1.
An asian person who acts like they are white. Yellow on the outside, white on the inside.
Quang doesn't know what Dim Sum is? man that guy's a Banana.
by Troy February 19, 2003
 
2.
Its a fucking fruit for god sake. Who the fuck DOESN'T know what a banana is?! FUCK! A STARVING KID IN AFRICA KNOWS WHAT A BANANA IS! HE FUCKING FANTASIZES ABOUT ONE EVERY DAY!
'Know what a banana is?'

'Of course i know what a fucking banana is you stupid fuck'
by legano June 22, 2008
 
3.
A yellow fruit that is known to dance and sing about peanutbutter and jelly.
"It's peanutbutter jelly time!"
by Baha October 01, 2004
 
4.
According to Gwen Stefani, bananas is what "this shit" is. Soon thereafter she informs us how to spell bananas.

Addicting? Yes.
Retarted? Perhaps.
Genius? Absolutely.
Orange County Spelling Bee:

Bee Man: Ms. Stefani, please give a definition and then spell "Bananas."

GS: This shit is bananas, B-A-N-A-N-A-S.

Bee Man: Genius. Pure Genius. Give her the 1st place trophy right away. Ms. Stefani, you are the bananas.
by Andro0z13 April 07, 2005
 
5.
1. A big curved fruit that is yellow.
2. Can be used as a dildo for a girl who is too cheap or shy to buy a REAL dildo. A banana works just as well.
Amy used a banana to masturbate because she doesn't have a dildo. After she was done she put it back on the table. A few hours later her dad came home and ate the banana saying "Wow! this banana tastes good!"
by willlyyy September 21, 2005
 
6.
it's a fuckin' FRUIT
"If you don't know what bananas are, you're retarded."
by crazy corey May 31, 2005
 
7.
1. a slang word derived from the old saying "bananas" used to describe someone that was crazy. Used now to describe anything in style or cool.
"That shit is bananas"
by Jewelius Seizer March 06, 2003