What does Biffe biffe's Biffe mean?

Biffe biffe's Biffe meaning in Urban Dictionary

An acronym for "Best Friends for Eternity".BFFE but we made a decision to add the "i" to make it appear French! :) Plural for best friend. A pimpslap-like motion towards the cheek announced in slow motion. There are many different variations, like the "somewhat Unexpected Biffe" and the celebrated "Ultra Biffe". The origin of this gesture is known to stay in a classic Batman television show.