grey vinyl flooring
I hate that shit even more than I hated the fake wood paneling and shag carpet of the '70s. I bought a house last year that had the grey vinyl flooring in the living room and I've tried my hardest to fuck it up during the renovation so I have to replace it, but unfortunately it holds up to extreme abuse pretty well.
Heh, according to the guy who sold me the house, he had to put the grey vinyl flooring in because of water damage from a portable AC unit.