I just remembered a scientific conference I went to at the Commonwealth Institute in London - they had a sort of welcome buffet and there were these funny triangular sort of 3 dimensional little crunchy parcels of something vaguely meaty, just about a single mouthful in size. They tasted a bit bland. At first. About 30 seconds later I broke out in a sweat, my lips went numb and my eyes nearly burst out of their sockets. I had to drink so much lager to get rid of the burning, and the vile aftertaste, that I slept most of the way through the afternoon lectures.
Not hot, but the most ghastly thing I ever tasted, was a surprise anchovy in the middle of a pizza that wasn't supposed to have anchovies in it. On top of 5 or 6 pints of beer. Not on top for long though. Ejected forcibly against the pizzeria's toilet wall after a very brisk dash. Serves them right.

