A 'beer bong' is a plastic funnel attached to a tube. The drinker puts the tube in his mouth and a supposed friend pours beer into the funnel. This apparently helps people get drunk more quickly than the old fashioned way of sitting around and talking. It is used mostly by some college students in the USA and younger people.

beer bong, sounds interesting, i have to opinion, first like the other said its a tube that used to attached to you mouth while your friends pour a beer into that tube. second is : do you mean a beer pong ? its kind a game that 2 team play a ping pong but they don't use any ping pong bat, but throw the ball using hand. They must throw the ball into a cup that put in opponent team area. If the ball in, the lose team should be drink a beer. Related to ping pong while i am in japan last month, I watched a commercial video in the train which showing ping pong video, which some people trying to put ball into a glass but the tricky thing is the glass was put in a difficult position and they must bounce the ball to another object before the ball get into the glass.

At drinking parties if you use a beer bong, you take an object (it looks like a funnel with a tube) and you pour beer from the funnel into the tube that goes into your mouth. Purge means to remove. The person in the sentence is saying "Please remove any pictures of you drinking beer from a tube from Facebook" Maybe this photo would be bad if your coworkers or boss saw it. Hope that helps.

A beer-bong is something that helps you drink beer crazy fast lol

额……看上去咋好恐怖~~~