Stumbling upon my best friend Alan plowing my busty girlfriend Handrea in our car leaves me stunned and rock hard. Her massive tits bouncing as she rides him, I can't help but whip out my own big cock and stroke it furiously, hidden behind the open door. They're so lost in their passionate fucking, they don't notice me jerking off mere feet away, imagining it's my cock Handrea's tight pussy is milking.