What is Pplp-pplp?
1.
Have anal sex; when spoken, it is typically accompanied by a hand motion similar to a person squeezing a ketchup bottle with one hand into their other hand's open palm, with the backside of that hand towards the person with whom one is speaking.
Hey, Devon, did you, you know, pplp-pplp that shit last night? (with accompanying hand-motion)
See