Uncommon slang term meaning to engage in intercourse with someone.
Unlike "fuck", it is not usually substituted for anything else. One would not say, "That swivving bitch." It means, quite literally, having sex.
"Bugger off, we're swivving!"
1) A person who is a total bum, failing anything and everything in thier life. Everything they say tends ot be bullshit, therefore when push comes to shove, they fail and people see through them.
2) Gay, homosexual, camp
"Man, i think that pink leatard is a bit swiv for you"