Pleasing anonymous cock

Chyla needs to go for a piss and on the toilet of a petrol station she calls a girlfriend. Suddenly she sees a dick appearing through a hole in the wall. While she is still on the phone she takes the cock in her hand. When she gets horny enough to fuck she hangs up. Hmm, she lets herself fucked deep from behind. Suddenly the mysterious dick disappears again and with her face covered in sperm she leaves.