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after having lazy sex while wearing pajamas and getting your cum mixed with her cum and getting it stuck to your pajamas, those pajamas are referred to jingle pajamas
Anthony: "damn dude my dick feels like it's stuck to my pajamas"

Jimbo: "what? why?"

Anthony: "i couldnt find a jiz rag in time"

Jimbo" "fuck man, you got jingle pajamas"
by non phixon June 21, 2010