A popular 'meme' song. PPAP stands for Pen-Pineapple-Apple-Pen, which comes with it's very own 'dance' which includes gesturing impaling a fruit with a pen, and bouncing back and forth to the beat of the song.
Person 1: I have a pen, I have an apple, uh, apple-pen..
Person 2: Don't do it.
Person 1: I have a pen, I have pineapple, uh, pineapple-pen.
Person 2: Don't.
Person 1: Apple-pen, pineapple-pen, uh. Pen-pineapple-apple-pen. PPAP.
Person 2: Don't do it.
Person 1: I have a pen, I have pineapple, uh, pineapple-pen.
Person 2: Don't.
Person 1: Apple-pen, pineapple-pen, uh. Pen-pineapple-apple-pen. PPAP.
by Heavenly Bob December 15, 2016