Top Definition
the natural instinct that only men have. often not understood by woman
seeing the fence was locked, john's manstincts kicked in and he climbed over the fence
by eviiil1 March 27, 2007

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The inner sense of right and wrong for the human post-adolescent male; the adult human male and/or masculine equivalent of woman's intuition (in the singular form) and women's intuition (in the plural form); masculine conscience and/or psyche.
Since he is immature, his manstincts are not (yet) fully-developed. Every new father needs to learn to trust his manstincts (in the same way a new mother needs to trust her woman's intuition). My manstincts went haywire when I heard that lame suggestion.
by canuck4Jesus February 24, 2010

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The basic manly instincts that every guy is born with. Such as being able to drive well or navigate through anything without asking directions.
Man 1: dude how did you get so good at driving?.... you just got your license yesterday.

Man 2: I dont know it must just be my manstincts.
by Joel amb February 12, 2008

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