In a video which has surfaced online, the man was seen at the back of a pickup truck with a woman. The woman lay with her legs in the air while the man knelt before her and started to unzip his trousers.
"Bust that John bro," a friend is heard encouraging him in the background.
But immediately the woman spread her legs apart, the man covered his nose and turned his head to one side, saying: "Arrgh I can't take that smell bro."
He got up immediately and jumped out of the van before pulling up his pants and zipping up.
Watch the hilarious video below.