(verb) To swallow your food and regurgitate it back up into your mouth to enjoy second servings of what you just ate.
Guy 1: "Do you want seconds?"

Guy 2: "Oh, it's alright. I'm still chewing on my second swallow."
by JessTer062 April 15, 2010
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A hybrid, progressive form of "first come first serve" where the second person literally gets the short end of the stick and has to swallow.
OVERCONFIDENT GUY: "Alright ladies, I'll be in the break room waiting. Remember it's first come second swallow." Overconfident guy pretends to fire his make believe guns at the two girls then walks away with a dumb grin on his face. Girl #1 turns to her friend. GIRL #1: "More like, last one in tastes the rotten eggs." The girls laugh and high five... missing each other's hand of course.
by Terio Marin May 29, 2016
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