Stating a phrase or asking question that suggests a contradiction towards a preceding statement or question.
Often irrelevant and, in all cases, does not answer the question.
Used mainly to stop a conversastion about to ensue on a topic the receiving end does not want to talk about. This is, for the most part, used by people who do not think it is morally right to just tell an outright lie.
When you're pretty much boyfriend/girlfriend with somebody (holding hands, making out, etc.) but neither of you have discussed the ambiguous relationship status.
girl 1: are you and insert name here going out now?
girl 2: well, we do everything a bf/gf do, but it's not official. it's more of an implied relationship.
girl 1: OMG NO WAY I'M GONNA BE OBNOXIOUS AND GO TELL EVERYONE NOW!
When everyone acknowledges that a person will be back within five minutes and they therefore retain possession of their seat, even if they don't explicitly call fives.