I can't say I really have much to say about this polish; it's a straight-up red foil, like wrapping paper, and it's really beautiful. It has slight blue-tones to it but it's fairly neutral on the whole. Oh, and the name is British slang, like most all of BL's polishes. I looked it up - the phrase apparently is "having a knees up" and it means you're going to a party or a dance. Anyway, this is a good polish to wear to a party, so that part seems reasonable!
It is a current polish and it has lots of 5-star reviews, to boot. People love this polish.