Serial killer serious... like serious with no turning back.

This kind of serious is not to be brushed off... it's life n death seriousness!
Serially, you need to lose the man bun.

I'm sorry I can't be part of your koolaid drinking party...serially.
by Digi Dave March 19, 2018
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slang for serious. Favored by Al Gore on South Park.
Al Gore: "Manbearpig is very serial."
by Forceflow15 April 28, 2006
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for serials is an evolution of "seriously" which became "for serious" and then "for seriously" and now is often "for serials?"

it is used to either emphasize or question a statement.
1: "hey guys, im preggo"

2: "for serials?"

or

1:im am for serials going to explode if we dont get to a bathroom soon, yo.
by hellzabaygruh October 11, 2010
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serial: serious. Serial is as serious as serial killers. So serious - more serious than cereal. Not as funny as cereal, but more concerned.
usu. in response: exp:

Richard, I'm pregnant!
Are you serial?
Holy rusted metal batman!
Are you serial?
by dueEast June 8, 2006
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"What? Are you serial?"
by CHOPOPJR November 3, 2003
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"Dude, I'm super serial. Why don't you believe me when I say I'm super duper serial?"
by Bryan Castillo January 9, 2008
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Short for serial number. Often used for an illegal method of registering a program one does not wish to pay for.
I got a serial for photoshop last night and it worked perfectly.
by Invalid H. User April 24, 2003
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