we had a spate of 'exploding' carling glasses in the pub a few years back.
they were these all singing all dancing head keeper jobs with the special bottoms & if they weren't completely cold when the beer went in them they were a ticking time bomb.
a lot broke cleanly around the base so when someone went to pick up their glass they lifted all of it but the base & the pint ended up everywhere. the most impressive was one that made it to the table, was drank from & when put back on the table blew up like a car windscreen into tiny pieces & covered about a 2m square area.
out of the box of 48 i think we lost 8 in 2 days so took them off the shelves!