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The inability of a heterosexual man or lesbian to think clearly since his/her cognitive faculties are being hindered by noticeable breasts.
May be either used as a noun for the person or an adjective for the condition.
Look how Steve's mind is mush while the Girls Gone Wild commercial is on--he is a huge titwit.
by Adam August 01, 2005
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Some nitpicker who ardently tries to supersede keeping abreast of lesser notorious though ostensibly mpre glorious nitwits.
Rather keep your wits 'bout you than moaning like a proper titwit.
by Hercolena Oliver October 02, 2008
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