Quicker than lager turns to piss literary phrase
Very quick
Very quickly
Very fast.
Extremely fast as if having been abruptly startled or shocked
This phrase derives from the 1980s in the UK. The earliest citation can be found in a poem Beasley Street written by John Cooper Clarke,
A humorous way of saying that what one has said is just what they acknowledge and may not be entirely accurate
Mike: Have you returned from your vacation on the beach? Your skin seems to get tanned.
Jenny: My skin is always dark. That's my story and I'm sticking to it!