Learn how to perform the Plumber blow job position with your man. This position is a bunch of fun to try if you want to be a queen of oral sex! Plumber Sex Position. Earning its name from its resemblance to a Plumber getting under the sink, this position is an extremely comfortable way for women to warm up the pipe. Oral sex, sure enough, greatly differs from other types of intimacies. While having sex in the 69 positions, making a blowjob or cunnilingus, it is impossible to get pregnant, thus such kinds of sex are considered to be safer.