Today's BWOTD is a great everyday word:
"Oh I'll get that done for you in a jiffy"
'Jiffy' = Hurry
However you wouldn't use this to say "jiffy up", well not unless you wanted to get a very strange look (important note* - there is a condom brand in the UK called Jiffy)!
You really only ever hear this combined with "in a jiffy" but don't ask me why, so use with caution :-)