Completing a variety of sexual activities with a girl (including penetration, oral sex, anal, sleighride, etc.) in ONE night.
Josh: So what did you and Jenna do last night?
James: Oh I gave her a Swanson Dinner ;)
by Franzzz September 23, 2008
2. Swanson Dinner

What one would encounter while performing oral sex on a girl if her previous partner had vomited in the act.

Carl: Damn, Josh, I wouldn't have gone down on her if I had known I was going to find a Swanson dinner!
Josh: Sorry, dude. It must have been the sushi.
by Dleg December 16, 2008

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