A term for you to say to someone if something they do is out of the ordinary and/or frowned upon by individuals that use the internet.
Gary: I just got done masturbating to some really good hentai.
Jackson: Did it have Lolis?
Gary: Yeah.
Jackson: FBI OPEN UP
by thotneeshia September 25, 2018
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1) A quote telling you the FBI are here

2) A meme. THE END
Me: Downloads Movies
FBI: FBI OPEN UP
by NintendoNerd December 19, 2018
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this is what happens when a humanoid watches 2 much hentai
humanoid: *watches hentai*
fbi: FBI OPEN UP
humanoid: holy sh** im dead
by oh ok weirdo October 30, 2018
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When people online are being creepy, the people will comment/reply and say “FBI open up!” showing that if they used that behavior IRL they would probably get arrested.
‘I’m 40 and I like 14 year olds.’
‘FBI OPEN UP!!’
by Tom Holland’s Girlfriend January 28, 2019
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He probably knows you better than you know yourself
Person 1: *googles on phone* Why am I so sad?
*Incoming Text from Mr. FBI Man* Hang In there Buddy
Person 1: Thanks Mr. FBI Man!
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You: Why am I getting this stupid ad?

T.V Host: Please watch our FBI T.V shows with no effort put into them right now!
by Gigantic_Amogus March 19, 2022
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An FBI Be Gone Spray is an special spray made from REDACTED, REDACTED, REDACTED, REDACTED, REDACTED, REDACTED, and REDACTED. Typically brought from your local back ally at 3:00 A.M from the cashier (Typically in full black in a really fucking large ass conspicuous smoke cloud risking death from asphyxiation). Be careful, the homeless bite! The spray typically melts ones eyes and rips their fingers in half, causing extreme and violent pain. Usually screams and satisfying pops mean the spray is working. To add to the fun, it lights human flesh on fire and causing the pain receptors to go haywire. Effects may include, sound barrier breaking screams, extreme pain, loss of eyesight, melting alive, body bruising, blood gushing, REDACTED, being ripped apart, suffering indefinably even after death, satisfying pops and breaks :D, REMOVED, altering of brain chemistry, bone position, skin, muscles, and about fucking everything about your body composition, you'll be a pile of unidentifiable slop in a matter of seconds. Used by many cool kids to get rid of their FBI agent for a epic TikTok trend that all the cool kids are doing. You should try one day! 😎
FBI: *shatters door very loudly and screams FBI OPEN UP for no apparent reason what so ever* Your under arrest, for multiple counts of child molestation and rape, genocide, human trafficking and child sex trafficking, terrorism, and torture!
Cool Kid: nuh-uh *proceeds to use FBI Be Gone Spray*
FBI: *liquefies*
FBI: *is goned*
Cool Kid: Now this will do well on TikTok! *proceeds to become #1 most viral video*
Cool Kid: *fucking proceeds to break reality and teleports behind you*
You: *you know what happens now :)*
by Adolf Hitler and Joseph Stalin September 19, 2023
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