I mean, any of the times I've actually tried before I've been rather drunk, so much so that I was actually once escorted off-stage in the middle of a 2-minute song...
"The fact my shirt was off by the 15th second had no bearing whatsoever and the chicken dancing and armpit farting another 30 seconds later were totally unconnected. Dragged off for no reason. No reason!"
"Oh yeah, I was down to my underwear 90 seconds in and had begun trying to 'legpit fart!' during a musical break. Maybe that had something to do with it."
I'd never sing karoake, but there are somehow multiple videos out there of me singing karoake. It's really a mystery of how that happened, according to my memory...