A lewd oral sex act wherein a male participant is receiving oral sex from a person with a tracheal stoma. When climax is reached, the male receiving oral sex ejaculates deep into mouth of the stoma-oral-sex-giver causing the semen to be released from the tracheal stoma, dribbling down the chest of the stoma-oral-sex-giver a la Plinko.
also see Detroit Sidecar
Dude, I totally got a free BJ last night playing Malaysian Plinko. My load dropped right into her belly button to score the free BJ!