Its when you warm a banana in a microwave for 30 seconds or until slightly warm and stick it in a your ladies bum with 2 scoops of your favorite ice cream, hopefully not chocolate, add toppings and use her butt as a bowl...
A blended alcoholic beverage comprised of rum, banana puree and ice. The dirty banana was 1st concocted by Carnival Cruise Lines.
David Hasselhof drank so many dirty bananas he made love to Ozzy Osbourn instead Sharon after the taping of America's Got Talent. Of course Ozzy was so krunk he loved it too.
The act of explaining to your friends a fashion faux pas while repeatably deep-throating a banana covered thickly in peanut butter.
Did you see that Wesley Snipes was wearing a short sleeve shirt with a blazer? Jerry Seinfeld had to go and give him a dirty banana in order to teach him the proper shirt-blazer combination.