Be serious is a derivitive of the phrase "what the heck is your problem, you're pretty dumb".
"Dude, why are you eating my chips, Be Serious"
by El Presidente May 24, 2004
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Used when telling someone to calm down. Usually when they are over-reacting.
Chia: My god these fake gucci bags look too fake!! I won't be able to sell these for full price.
Jay: It's not that serious.
by Domexicano March 17, 2005
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"Things are gettin' serious up in here."

"I made some serious cash last night."
by **** you March 18, 2003
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Not comical.
The guy would make a joke every now and then, but was mostly serious by nature. He thought of comedy as something the less serious and more silly folks enjoyed a bit more.
by Solid Mantis June 20, 2018
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it’s like bro are you serious ? a mix of for real and serious 🤔
“she literally just told me it happened biatch

and i go “are you for serious?”
by cxforseriouscx June 01, 2019
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A phrase used to declare the serious nature of the statement that the phrase preceeds.
1: I have aids.
2: HAHA! That's funny man!
1: No, on the serious, I have aids.
2: Oh. I hear the only cure is death. On the serious of course.
by SaintZi January 22, 2011
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(1) adv - "seriously?", expressing doubt/surprise or asking for confirmation
(2) exclamation/statement issuing confirmation
(3) agreement
(1) yo girl is preggers with triplets?! for serious?!
(2) for serious, that chick wants my ass!
(3) "that teacher is dumb ass hell."
"for serious, man."
by je adore dior March 08, 2003
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