Sexual intercourse that lasts longer that four hours
Oliver: Dude, yesterday Sarah and I were planning some serious bones for the evening, so I popped 4 Viagra. It still hasn't gone down.
Harold: Maybe you should go talk to your doctor about that.
by Oceaninto January 6, 2017
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A play on words of 'Curious George' which is a person that ruins an intended joke or light hearted comment by being too serious.
Joker: "Ha ha, when that kid rides by on his bike, you should throw a stick in his spokes."
Buddy: "That's not very cool, they could get hurt."
Joker: "...way to kill the mood, Serious George."
by Bearded Fist September 21, 2013
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Ishowspeeds slogan, wtf are you doing? stop searching up random things by a racist monkey and go to church you mafaker
*About to win* Ishowspeed: OMG YES YES COME OWN IM SO CLOSE *dies* ishowspeed: ... * huge inhale* Ishowspeed: AHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HAAHAHAHAHAAAHHHHH NOUUUUUU :((((( >:((( *punches moniter* *moniter falls on his head* bro are you serious right now?
by The Undernot August 1, 2023
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noun. A covert operative for the Central Intelligence Agency, MI6, and/or Mossad.

Or other unknown state and/or non-state operatives, seeking to maintain the status quo of the military industrial complex.
Mick: Hey man, who do you really think killed JFK?
Jack: Serious Fucking Guys man.
Mick: ye.
by BonerMasterMick2 May 7, 2021
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phrase used to validate an idea or person
we the coolest kids doing it like dat serious
by k9yblade September 29, 2021
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when something is so serious it makes you mad
Dude 1: bro did you cat really freeze outside

Dude 2: YES BRO IM MAD SERIOUS.
by deadness February 6, 2018
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