Too many to list but here's a flavour. Surely most of us have experienced some or all of these?
The one where, as the set drew towards its climax, we were interrupted and asked to draw the meat raffle. (And won a piece of meat)
The one where we ended up soundtracking a fight between two women at a working men's club, not wanting either to up the tension or to go silent. Weirdest jam ever
The one where I was dragged out of sick bay (glandular fever) to do a gig, despite my near-constant dribbling and loose grip on consciousness
The 'regular' gig where the landlord told us we were brilliant if there were punters, and sh*t if there weren't, irrespective of how it had actually gone.
The one where some fruity young music students invited us to 'headline' their gig, so as to borrow lights and sound equipment, then left (with the entire audience) before we started.
The one where half the band were on one side of the toilet door and the other half were opposite, stuck behind the pub quiz machine. Stand-off every time someone needed a wee.
The one where the football was on the pub's TV at the same time as us
The one where we did a spot for a (now long defunct) ultra-local TV station, then were dropped (due to a 'misunderstanding' with the producer) in favour of a piece about Southampton Airport. It wasn't a Southampton TV station, either.
The one where the depping drummer played everything a la Vic Reeves' club singer routine ... and as we packed up commented: "I thought that went pretty well."
Could be worse. One of my bandmates remembers the landlord at one London venue having to pacify a bloke who had a gun. Another where they made it all the way to a gig in Cornwall, to find themselves double-booked and having to try every other pub in town on spec.
And we've had our share of brilliant ones, too. Remember one where the singer had everyone in the pub doing percussion to a spur-of-the-moment Hawkwind improv, and two very nice German ladies insisting we signed their T-shirts. Maybe one for another thread.