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2.
big headed and confident.
oh my god he's so heslin!
by Meow!! April 21, 2008
 
1.
A verb or adjective.

The act of an otherwise heterosexual male talking excessively about feelings and emotions for no reason other than to get attention or to cultivate an image in front of emotionally insecure teenage girls.
Boy 1: I'm so upset, sometimes I cut myself although I'm not sure why
Girl 1: Me too, I also do this and do not have any reason to do so
Girl 2: Don't forget about me gang, I self-harm more than either of you and I have absolutely no idea why other than that I might just be an over-emotional pathological liar
Man 1: Woah, how Heslin
by MarkCorrigan January 11, 2014