Noun: A competition played between two straight males in which each man develops an erection and proceed to rub their boners together. A winner is crowned when one man's boner stays hard and the other's goes flacid.

Note: Regional rules apply: Different areas define a victory by losing your boner first... in other areas the still-stiff man is the victor.

Regardless of differing regional rules, "No Homo" is in effect for the duration of the competition.
Tim and Dan played Boner Friction until Tim lost his erection and Dan won.
by Kevin Curtis May 3, 2008
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