Top Definition
A rule that someone calls on a friend who is crushing/stalking/etc on a person he/she is sexually attracted to, but may have a different sexual orientation.
The rule states that the friend cannot be within 30 feet of the friend's crush until his/her sexual orientation is learned.
May have first been used in the film "Camp".
Ron-John is so cute

Sharon-I declare a 30 Foot Rule! John is so straight.
by RBPHMG March 04, 2012
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