think with one's little head

present singular third person thinks with one's little head · participle present thinking with one's little head · participle past thought with one's little head · past thought with one's little head · alternative think with one's other head · alternative think with the right head

1. euphemistichumorousidiomaticusuallyTo make decisions or act based on one's sexual impulses rather than based on clear reasoning.

   Obsessed with Heidi's cleavage, the pervert within may start thinking with his little head instead of his big one.

   2003 May 9, Dalton Ross, “Rumble in the Jungle”, in Entertainment Weekly, archived from the original on 14 Feb 2009, retrieved 10 Jan 2010

   2 more examples

   [A]ll Theo could think about were all the places on her body he wanted to put his mouth. He was definitely, as Zeke was prone to say, thinking with his little head and not his big one.

   2007, Linnea Sinclair, The Down Home Zombie Blues, →ISBN, page 234

   [I]t's fair to say that now-disgraced former foreign affairs minister Maxime Bernier was thinking with his little head—as well as his fat one.

   2008 May 28, Antonia Zerbisias, “Bernier left ex-girlfriend twisting in media wind”, in Toronto Star, archived from the original on 14 Dec 2009, retrieved 10 Jan 2010

   Synonyms: think with one's cock, think with one's dick, think with one's penis