A guy with a massive chin, yet a substantially smaller sized penis.
Oh no, Rosie slept with a pin chin last night.
by MJRB0607 April 13, 2018
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pin chin means a person who has a really pointy chin
ergh look at that girl, shes got a right pin chin!
by Jessiiccaa January 22, 2009
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1. The act of titi-fucking a girl so hard that the head of your dick pokes her in the chin, making her head bounce up and down.

2. Another name for titi-fucking.
EXample 1:
J: "Guess what!?"
C: "What?"
J: "I was poking chin with your sister last night!"
C: " Fuck You.."
J: "HAHAHAHA"

Example 2:
J: *from across the room* " DUDE I WANNA POKE YOUR SISTERS CHIN!!!"

S: " Go ahead! Good for you!"

S and J : "hahhahaha"

J: *slaps C in the face
by mr.meister0902 January 28, 2011
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To have a chin that one would like to bounce his/her ball off.
"Say friend, your wife has a very kind chin"
"Whatever do you mean"
"I would love to bounce my balls of it"

"Well, Thank you!"
by devoidseeker February 14, 2021
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Common white girl, found in habitats like the basketball court, and sitting alone in his room playing rocket league. He is the gayest person you will ever meet, yet he is still in denial. He has the personality of a white girl.
John - I'm dating this white girl, she's a real Marcus Gabriel Chin I'm telling you
Dave - Shit man good luck
by BailoParaChicas January 08, 2021
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a wrinkle or more than one on someones chin area
he has such a thanos chin
by bobbyasarous February 20, 2019
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Someone who's chin resembles Hey Arnolds Grandfathers.
Me: Yo Michelle,Jenna has that Grandad Chin
Michelle: Bitch got that Harold gut too.
by Blackout_Illuminati January 03, 2014
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