Putting in some money toward the purchase of an item or items. Usually indicates a willingness to contribute $5 on a $20 bag of weed.
"I'm about to see Joe to pick that up...you got five on it?
by Big Daddy TJ April 27, 2006
Putting in some money toward the purchase of an item or items. Usually indicates a willingness to contribute.
We're gonna puff puff pass, you got five on it?

I've got five on that pizza.
by Spirit Bear October 28, 2004
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
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
Loud and clear. From military erminology. Old radios had two readings. Loudness and clarity rated from 0-5. Thus five by five means literally loud and clear.
How's my signal?

Five by five.
by huddaddy September 10, 2003
Term meaning everything is OK.

The term comes from old radio slang. When communicating over radio, the operator would report the strength and clarity of the signal on a scale of 1 to 5 each. Therefore, if a radio operator described the signal as "five by five" it meant it was both loud and clear.
I don't use the phrase "five by five" because they use it on Buffy.
by SpeedoMask August 11, 2003
A term used by Faith on Buffy, to discribe a situation as ok.
I'm feeling five by five
by jayde September 16, 2004