(noun, verb)Sexual intercourse between at least four people in which all orifices are filled with genitals of one another. For example, one woman could be "trainwrecked" by three guys: one with his penis in her vagina, another with his penis in her anus, and the third member with his penis in her mouth, all of which is happening at the same time. It can also happen with a bisexual man: penis in his mouth, penis in his anus, while he has his own penis in a woman's vagina/anus/or mouth, etc. There are several other combinations that create a trainwreck (4 men, 2 men and 2 women, etc.) the only limit is the sexual imagination. See also finger cuffs
1.Jane:What did you do last night?
Sarah: I took three guys home! I sucked one guy off while the other two fucked me in the ass and my pussy
Jane: Shit, girl! Sounds like you got trainwrecked!
2.Matt: I can't believe you're looking at porn at the library computer again, Jeff?
Jeff: I'm sorry, but I'm really horny and my computer isn't working. Hey look at this chick! She's getting trainwrecked, see: she's got one in the mouth, one in the pooper, and one in her vagina. God, that makes me happy :)
Matt: Um... That's disgusting! What a slut!...Hey, did you just say "pooper"??!! OMG, Bitch!