Top definition
Like OTP, but involving 5 people. Often refers to a big bromance instead of something romantic.
Person 1: One Direction is my ultimate OT5 tbh
Person 2: I know, one big romance--Bromance!
by Gra aa hma April 29, 2012
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2
A paring in Tennis no oijisama, or Prince of Tennis, in which the characters Echizen Ryoma, Tezuka Kunimitsu, Fiji Syuusuke, Atobe Keigo and Sanada Genichiro are in a 5-some.
"I am a major fan of the OT5"
by IKMcGwee May 06, 2007
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