when one has been slapped in the face with any number of items, be it an actual trout, a sponge, a banana peel, an anvil, a boobie, whatever. after the slap to the face has occured, the attacker must shout at their victim: "You've been TROUTED!" or simply "Trouted!!" This is not a strict definition, so the rules for usage are not solid.
*walk up to person a and tap them on shoulder*
*they turn around and are met with a nice smack to the face*
Attacker: Trouted, bitch!
Victim: Oh nos!
When someone gets so smashed that they do not remember what they did and did not make it to a social event, and are in no state for society.
when an individual gets Trouted they can't make it to a ball that they payed for.
to not be sober (on drugs, alcohol, mentally unstable)
I went out will Bill last night and we got absolutely trouted