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2.
When someone gives your fourhead a high five.. they Slap you really hard on the head they yell four-five
Person one: Yo high five mayne..
Unsespecting victim: Yeah Boy

**Person one: Slaps vcitims head and yells FOUR-FIVE BITCH
Victim begins to cry and walks away
by Mary B June 19, 2006
 
1.
Forty Five caliber pistol, generally the largest caliber (and therefore potentially the most deadly) available in the US.
Man, you hear Fitty Cent got shot 9 times with a four five? He lucky he still walkin!
by JMKinMich March 10, 2008
 
3.
When someone gives your fourhead a high five.. they Slap you really hard on the head they yell four-five
Person one: Yo high five mayne..
Unsespecting victim: Yeah Boy

**Person one: Slaps vcitims head and yells FOUR-FIVE BITCH
Victim begins to cry and walks away
by Mary June 14, 2006