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(noun): one member of a couple who are not officially dating, but act in every way like a couple, annoying the fuck out of everyone around them.

(verb): being someone's blangatang
Male: What are we exactly?
Female: I don't know. We're happy. Why do we need to put a labal on it.
Male: Because there is a label: BLANGATANGS, bitch!

Gossipy chick: OMG! Have you seen those two? Are they an item?
Guy who wants her to shut up: They're blangatangs.

Man 1: Things are going great. I'm not sure if I want to ask her out though. We might just keep blangatanging.
Man 2: I hate you. Leave me alone.
by tippiandalfred June 28, 2010
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