One of your friends who, when around the opposite sex, completely changes. This leads to them telling you to stop being so disrespectful and to be more sensitive just to look better themselves. Usually male. Pronouned oppo as in opposite.
Day 1, You: hahahaha look how fat that girl is
Day 1, Them: hahahaha girl needs her own area code SON

Day 2 with opposite sex, You: hahahaha look how fat that girl is
Day 2 with opposite sex, Them: That is very insensitive of you and I'm sure she has a very hard time trying to lose it also. You should learn to be more respecful to girls.
You: (thinking to yourself) He's a fucking oppodouche
by TLC1234 September 24, 2005
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