May I suggest a similar, albet a less brutal, fish inspired punishment.
I saw it at the Comefy Store in Soho. It's where The Young Ones (Rick, Ade etc) honed their craft.
A man and a woman, both in top hat and tails (the woman wearing stockings rather than trousers) came on stage to the tune of Wheels by The String-A-Longs. The lady then bent over, flicking up her tails in the process, at which point het partner produced a large fish from inside his jacket (could have been a carp but I can't swear to it) and proceeded to spank her with it.
No doubt this is one of those 'you had to be there' occasions but I can at least confirm the act was allowed to continue until the end and received a large round of applause.
Alas, that was not the case for the following act, who was literally carried off the stage - as was the custom at the time for those not deemed up to par.