Top Definition
the law that says a man's hair can be no longer than his penis.

named after bill bowerman, who instituted the rule when he coached the university of oregon track team.
- cut your hair, hippie!
- piss off man: bowerman rule.

(or)

- looks like you need another haircut.
- aw man, i shaved it yesterday!
- sorry dude, bowerman rule.
by ocon April 02, 2007

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