Angry Pineapple 

To give someone an angry pineapple you must clasp your hands together so that your fingers are inter-linking and forcefully insert this hand formation into their rectum through there anus. Th process is so called because of the similarity of the clasped hand shape and a pineapple. It is also believed to have originated from the fact that inserting a pineapple through the anus has a similar effect to giving some an angry pineapple.

Did you give him an angry pineapple?
Oh god. Your ass looks like you have been angry pineappled a few times...

Angry Pineapple by The Secret Angry Pineappler December 3, 2010