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The thing you hear before the FBI busts through your door and raids your entire house for loli.
*knock knock knock* FBI OPEN UP WE KNOW YOU'RE IN THERE
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by Frank Grimey Grimes July 14, 2018
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When you listen to loli breathing as you jiggle your sausage.
Loli: Onii-chan, what is this white liquid in my pee hole?
FBI: *thump* *thump* *thump* FBI OPEN UP! *doors and windows blow up and rifles get fired rapidly*
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by someunfunnyguy69 July 23, 2018
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what you hear when you

Download Minecraft Pocket Edition for free
Watch loli hentai
get vbucks for free (virgin bucks)
Get robux for free
download Huzuni minecraft hacked client
say a Bad Word in Club Penguin
say hecc or fricc on a minecraft christian server
watch my hero academia for free (even more FBI agents come if you bust a nut to the charachters)
watch Avengers Infinity War for free
watch Attack on Titan for free (I was too excited to watch it so I got it for free. some FBI agents came to my house and raided my drawer taking all my fidget spinners and loli hentai. It was their fault for making us wait 5 fucking years for 12 episodes.
Watch (insert movie here) for free. An FBI agent will 100% come to your house
Writing someone's name in the Death Note (a book which kills whoevers name you write)
Griefing a Minecraft Server
Person: *Watches My Hero Academia for free*
FBI Agent: ***FBI OPEN UP!***
by TheExtremeEvoker August 12, 2018
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hentai uncensored loli?
oh I don't like where this is going.
fbi:fbi open up!
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by virtualsadboy June 15, 2018
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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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The thing you say when entering a room

Derivatives include: FBI Close UP!, FBI Close DOWN!
Hipkid: FBI Open UP!
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by officialpyrocynical October 17, 2018
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