Top Definition
When an attractive female makes you feel happy in the pants.
That bird was so cute, she gave me a trouser smile.

Her booty was so fine, I got a massive trouser smile.
by chilli sauce February 24, 2013
Trouser Smile : a Cum shot in the shap of a mouth on the side of the space bettween there pussy and and ass hole making a :)
I was so horney last night i gave my girl friend a trouser smile.
by Slider Dave December 06, 2009
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