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noun. measures taken to prevent the loss of being manly in a predominantly female situation.
1) Jim: damn dude, these women are too much... how many times can they watch "pitch perfect"?
Bob: Yeah bro, had i known, i could have shown up to provide some brophylaxis.

2)A coed baby shower? ESPN3 and johnny walker should provide good brophylaxis.
by Superamario1691 August 22, 2013
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