Fliping is a term used in the Drum and Bassworld to flip the Skwiff, its the fine art of sticking ones fingers up his bumhole and opening them up once inside to perform a 'V' shape then twisting in a 180 degree motion.
Skwiffer in the DNBA scene is the master of the arts who regularly wonders around his home town 'Fliping' people off.
1. To simplistically re-direct any comment, question, statement etc., to the initial source by replacing the subject pronoun with an emphasised 'YOU', often with underlying irrelevant sexual connotations.
2. The exclamation made by the observer of 1, as well as the knock-on effect and pack mentality that often ensues.