The act of having noticeably poor
posture, as a result of long-term
slouching, causing a person's figure to resemble that of a
shrimp.
Person #1: You trying to
get into something tonight?
Person #2: My spine hurts from
shrimp backin' all day.
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Person #1: Man, that dude over there obviously has
scoliosis.
Person #2: That's ol' shrimp back, Jack, cut him some slack.