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Protection worn to defend yourself from the unwanted side-effects of being mindfucked, including STMIs (Sexually Transmitted Mental Illnesses) and thought-pregnancy.
-Hey man, I'm about to go learn about quantum theory.
-Well, don't forget to use contrainception!
by NOP724 April 15, 2011
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noun - the act of going into a dream within a dream within a dream, to convince a female (whose mind you are in) that you are using contraception during intercourse, when in fact you are not.
Bro 1: So you wore a condom, right?
Bro 2: Hell no! I'm a stark believer in contra-inception and raw-dogging it.
by Bobble Head Iron Man December 16, 2013
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