a linguistic expression used to make a request for what is commonly known as taking a rip, doing a bonghit, having a pull, etc. theoretically, also could be viewed not merely as a request but as an observation of the other person's desire to comply with the request given. A different intonation pattern (often a raised pitch near the end of the sentence) can often suggest that the objective would like to smoke cannabis through a water pipe. also used as an interrogative when questioning ambiguously. several inflections apply. its also a noun used to describe a colored glass bowl of cannabis, its self.
bill - "hey fred...bing bing?"
fred- "no thanks bill, maybe later"