The electric shocks are usually because the guitar cab isn't earthed properly, or are on a different mains supply to the PA.
(Operation Interference, Fri 19 Aug 2011, 12:39, 1 reply)

Ours was a badly wired plug...
...through 3 or four extension leads.

I'd spent the whole evening getting shocks from the mic and even took my (rubber soled) shoes off to check that I wasn't just really pissed and "imagining" the shocks...that gave me a bit more of a shock, but even my guitarist didn't believe me until he collapsed.

We just left him on the floor are carried on playing.
(littleben hasn't anything funny to put here, Fri 19 Aug 2011, 13:00, closed)