I always understood it to be a metaphor for someone that is either too worldly wise, or not stupid enough to eat a raw prawn (an "old raw prawn" would be even worse).
There are people that will dive right in and consume the whole plate of prawns without second thought, but there, lurking within the perfectly edible fully cooked prawns, is a deceiving little bugger that will cause severe repercussions for a while.
In London, we say "Don't come the old acid"...... Why? Gawd knows.
A girl's gotta expand her horizons.
I guess this made a good one..
shewolfnm wrote:other times, I would rather just pull out my uterus with a pair of pliers.
No, the other one was better, the one Gus quoted ...
