Procure por qualquer palavra, como dirty sanchez:
 
1.
A panty smile is when someones penis is half mast, or in a semi position.

Mirroring the facial smile (panty smile), and a full on grin (absolute stonk on)
Hey Joe, Tim's got a right panty smile going on over there chatting to Lisa
por Kennith Lambert 27 de Fevereiro de 2011