Similar to a "faux-five."

When giving some one a high five you stop at the last minute. However, instead of just dodging the high five you form your fiving hand into a finger and shake it at the person. A stern glare should accompany this gesture. Sometimes a loud "No!" is also appropriate.

No-fives should usually be used as friend punishment. A great way to get some ones hopes up then crush them at the last minute.
When Keith told me he finally caught Raiku he thought he was pretty cool... until I No-fived him.

I really deserved the No-five I got after losing to a girl in air hockey.
by Watermaine October 29, 2008
Get the No-Five mug.
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
Get the five by five mug.
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
Get the five, five, five, and five mug.
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
Get the five by five mug.
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
Get the five by five mug.
A term used by Faith on Buffy, to discribe a situation as ok.
I'm feeling five by five
by jayde September 16, 2004
Get the five by five mug.
Means " Things are OK"
"Five by five" was used in the film "Aliens" by the pilot during the dropship descent to LV-426 to denote that they were on course
by tonyhippy December 15, 2011
Get the Five By Five mug.