Cthulhu'd
To have your civilization eaten or otherwise destroyed by Cthulhu.
You just got Cthulhu'd
Cthulhu'd
To have an octopus or any other betentacled sea-nasty latch onto your face, usually with the more gribbly of appendages dangling down from the chin.
Holy Yath n'Gai, Batman! Steve just got Cthulhu'd!