To have sex with a girl whilst pushing her face away from you using your forearm at a rightangle in front of you. Best done during doggy sex to push her head forewards into the pillow.
During make-up sex, he took out his aggression with a forearm of justice pushing the back of her head down into the pillow, whilst taking her from behind.
by JohnEvo December 1, 2006
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when a lesbians arms are super jacked because of all the sex.
dude look at that lesbian forearm.
by LDS Anonymous September 20, 2018
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A Syndrome in which one masturbates so much that one of his forearms is more muscular than the other
Boots:"dam man i have a seriously strong right forearm and i dont know why."

Krabs:" man dont u know its muscular forearm syndrome you sick perv, but it is bigger. SO Ur a righty HUH?
by jewjewb October 10, 2007
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When the person who just received a blumpkin puts their arm elbow deep in the toilet and then closelines the person who just gave them the blumpkin.
Ben was enraged that Kristie used her teeth when he climaxed on the can so he immediatly gave her a blumpkin forearm shiver to let her know who's boss.
by C Floods July 7, 2006
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The state of a man's genitalia after a prolonged bout of wanking, frottage or lube free sex (possibly with a post-menopausal MILF)

Derived from the state of a baggage handlers forarm after being repeatedly thrust through partially opened zips to steal cartier watches, mobiles and anything else they can get their theiving hands on.
I was up all night bumming your mum and now my cock's like a baggage handlers forearm.
by murty murt August 23, 2006
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Upon thrusting a fist into your partners asshole, you punch or thrust upwards until you tickle the tonsils and provide a shiver of delight or death.
Aaron gave Jeff the old forearm shiver me timbers until he squeeled in delight.
by Flaccid Frank November 21, 2017
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It is the ultimate danish debate about, if it is forarm or underarm.
my forearm hurts!
"stupid bitch screaming": Its called a fucking underarm!
The definition of forearm is the lower part of the arm, just under the biceps and elbow.
Forearm - Forearms - All the forearms
by Schweinstein March 9, 2018
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