One night stands in themselves are fairly common, most people have had at least one in their sexual career. But weird one night stands that go off the rails are a bit more rare and far more entertaining.
Who wants to hear about pleasant exchange of orgasms when you could be privy to a cinematic story about a squatting one night stand who moved themselves into the apartment?!
I, for one, am far more compelled by the endless disasters of casual sex than the success stories. Weddings and baby showers are places for discussions of love stories gone right, and finding someone against the odds, but internet threads and happy hour talk is all about the disastrous dating and sex stories.