An old toothless gorilla walks into a bar and suddenly remembers that he left his false teeth at home. The bartender notices, as the gorilla is a regular customer, and forgets his teeth about half the time. Then its very difficult to understand the gorilla when he talks, especially after he's had too many drinks.
So the bartender asks him, "Would you like to have your 'banana' tonight in liquid form as a 'daiquiri'?"
The gorilla replies, "Nah, gnaw banana"
So just as soon as I wrote this joke I called my mother to tell her. She is typically the first "victim" of my humor. So I explained that I wrote it working backwards starting from the word 'banana' as I was making my grocery list. I had just asked my wife if she wanted a banana and that sparked me to try to write a symmetrical sentence with the syllable sounds "nah,nah,bah,nah,nah".
Oh, I just love silly symmetry.
So while I was still on the phone with my mother, I cracked up laughing, telling my wife in the other room, "Oh Honey, you inspired me to write an old toothless gorilla joke", ...
to which my mother warned me, "she's probably going to hit you for saying something like that."