Slang for a legal substitute for extacy, ordered in packs of five.
Dude, I just got some five, five, five, and five!
by Dr. P. Hunter July 22, 2008
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Verb -- Freaking out or tripping on drugs, usually psychadelic mushrooms or hallucenogens.. Inspired by the song "Five-Five-Five," by Frank Zappa. The instrumentals tend to inspire people to take drugs. Once in a state of inebriation, the maddening guitar riffs of "Five-Five-Five" make Phish look like O'Dweeds compared to the wicked buzz you cop from Frank's Fiver. Which is ironic, because Frank Zappa was very much against drugs.

Also simply referred to as Fiving, rolling with Frank's bunch, or 2F.
"Yeah, man, I was totally Five-Five-Fiving it last night with Frank's bunch. Had like, fifty mushrooms and some beer, man. It was like getting a year's worth of pussy in four minutes. Uh... what was I talkin' about, man?"

"No way! You were 2F without me, man!? Dude, I so hate you now! Just kididng, brah."
by DeusExMagna November 20, 2005
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Alpha Apex other wise known as the Five Five Goddess is the creator!
Yo Apex lets go eat some Five Five's in this bee!
by Jay-Mow August 30, 2012
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1. (n.) A weapon (generally an assault rifle) chambered in 5.56 NATO caliber.
2. (adj.) of or in 5.56 NATO caliber.
1. "I count three hostiles: two AK's and a five-five-sixer, over."
2. The new five-five-sixer HE round was especially effective against lightly-armored vehicles and personnel.
by Kirk0007 July 26, 2010
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Your friend is in the hospital. Your other friend wants to call. You prank him by giving the area code and 555-1212. He calls the number not knowning it was information and asks the operator to speak to him. She says city your calling again and he asks for his full name again.
He calls me back and i start laughing before speaking a word. And that is my five five five one two one two story
by Kuehlstein February 14, 2018
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Five by five is a radio communications expression that means 'loud and clear'. One of the fives represents the S units of reception strength. The other five is a rating of the signal clarity. Five by five is a good, clear signal. The radio use of this expression goes back to the 1950s: "'All right, testing, one-two-three-four. . .' 'Five by five, Mr. Holloran!'" (Hunter, Blackboard Jungle, 1954).

The more metaphorical meaning, popularized by Faith Lehane from the television show Buffy the Vampire Slayer, wasn't recorded until the 1980s.

The use of the word is primarily used in the military, or when discussing something similar.
"'I hope everything's all right.'
'Yeah, everything is five by five'"
by 5by5 July 3, 2005
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