When a man slightly flexes his arms everytime he passes attractive women, this is The Flex Reflex.

This isn't recommended, because if the girls you are trying to impress call your bluff, you will look like a total ass.
The Flex Reflex-

"Jessica called me out on my Flex Reflex today, I feel like a total ass."
by Austavious Rex April 9, 2010
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To stomp something fallen with your foot so noone gets it because you're a nasty gypsy.
Guy Nibba #1 - Hey I just dropped a coing but that damn guy has a Gypsy Reflex

Guy Nibba #2 - Sorry to hear that
by Honda_Civic_goes_MMMMMMM November 2, 2019
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When a driver involuntarily moves their arm in front of the passenger when slamming on the breaks. Occasionally faked by men to feel a woman's chest.
Some drunk slut cut me off so bad last week I can't seem to shake the mom relex.
by KJR August 16, 2005
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The involuntary reflex of clenching your butt cheeks together whenever you hear a noise behind you.

Done in prison to mitigate the possibility of anal rape.
1) Wow! Amanda's ass clenched up big time just now!
2) Yeah, she's got total prison reflex.
by T-TIMMEH! December 22, 2010
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When something occurs that puts you in such a state of shock, you're not sure if you should;

1) Laugh at the absurdity of the situation
2) Cry
3) Become so enraged that you feel the need to vomit

4) Preform all 3 at the same time
I can't watch the news anymore, it's just one Trump Reflex after another.
by Heilstrahl February 8, 2017
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During conversation, when any debatable topic point is raised, an automatic response to pull out one's smart phone and Google it.
Dick: "I thought licorice candy had anise in it."

Jane: "I thought licorice is a different plant than anise."

Dick: (retrieving HTC Incredible from pocket) "Hold on, I'll Google it!"

Jane: "Not again! You need to see a doctor about your Google Reflex."
by Mr Eks June 14, 2010
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The close reflex is a reflex many internet users gain, be it from pop-ups, shock sites or Rick Roll's.

The close reflex is triggerd when similar parts of the brain react to an image on a computer screen, like the throat does when fingers or penis are forced into the mouth. Making it related to the gag reflex.
Mark is browsing the internet, when his friend John sends him a link on msn to website called <Insert disgusting shock image website here>. Upon the webpage loading, he instantly looks away in disgust, and his close reflex kicks in. His hand quickly moves up and to the right and clicks. Causing the web page to be closed within seconds.
by Highest Velocity June 24, 2010
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