What's the worst flight you've ever been on?

Was it turbulence? Was it a screaming kid? Was it one of those "holy shit, we're all gonna die" experiences? People love sharing their worst flight stories, and if you've got one, I wanna hear it.#####Edit: Holy crap! Didn't expect it to blow up like this. Silver, gold, and platinum people, thank you. Love the stories people have been sharing too.