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Performing analingus on a partner with tapeworm.
Sally hates Billy so much that when she got tapeworm she tricked him into eating her pasta salad.
by kittenHolocaust August 16, 2005
To be upset or dissatisfied with a situation
After his favorite football team lost, Johnny was acting very pasta salad.

Jimmy was acting pasta salad after failing his math exam.
by Fastcracker7373 September 16, 2013