When a girl (woman) is leaving the place she had sex at last night (usually with some random guy).
Her hair is all messed up, lipstick very smeared. She is holding her hand towards her back side to ensure her dress stays down, and you can tell she has no undies on usually. The neighbors know the walk and the random dude watchs out the window with a giggles to himself or a roomate, cuz he too knows THAT walk!!