1 definition by 4075230420

When an adult is so overweight or obese they have dimples where their knuckles should be protruding much like a chubby infant.
Yo mama is so fat she has baby knuckles!
"Helen has really put on the beef" "Yeah, she has developed a really nice set of baby knuckles"
by 4075230420 January 24, 2017
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