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The area on the male genitals where the penis and ball sack make contact when the penis is resting on the balls. Sinilar to how a baby arm is a euphemism for a penis, the baby armpit is a euphemism for the area previously explained.
"I forgot to shower yesterday and now my baby armpit has a gnarly smell"

"Whenever I sweat a lot my baby armpit starts to itch"
by MartianKazu May 03, 2020
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May 8 Word of the Day
1. Slight sins or offenses
2. Petty crimes or small infractions
3. Las Vegas Punk Rock!
Peccadilloes shows rule.
by James Messina August 11, 2006
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