Slang for any type of anal sexual activity. Origin is in reference to ass play in prison where available lube is limited to packets of salad dressing typically smuggled from the commissary.
Hey Bubba, if you want to get your salad tossed tonight make sure you snatch some of that ranch dressing that I like from the commissary.
Similar to a tossed salad (The act of licking the anus and the area between the sex organs and anus, which is covered in a sweetliquid or syrup) but when the receiver needs to safety wipe.
She thought should would toss my salad, little did she know she was in for a tossed wet salad (Venice Cafe Salad) tonight.