When I got on the commuter bus, the inside was packed and in front of me was an office lady wearing black pantyhose. I got excited by the situation that my crotch would hit the office lady's ass if I moved a little, and when I secretly rubbed my erect penis against her, the office lady didn't hate it and started to feel it and squirmed! I rubbed my penis against her pantyhose! I couldn't hold back and plunged my penis into her wet pussy!