Titjob, the fine art of fucking with boobs. A titjob, or mammary intercourse, as a nice girl would say, is the stimulation of a cock, rubbed between a woman’s breasts and vice versa. British folks called it french sex and it is also known as titty-fucking, titfuck or Paizuri in Japanese. Woman with very sensitive breasts might reach an orgasm of the breasts by giving a titjob, other might just get off because they are fucking with teir boobs. Titty-fucking is one of the nine substitute exercises for penetrative sexual activities, as detailed in the Paradis Charnels of 1903. The lesbian way is the stimulation of the clit by the nipple of the other girl.