Laugh sex is a fun sexual act (used mostly as foreplay) performed for female satisfaction. The woman must first straddle her partner placing her vagina on her partner’s lower abdomen. In order for laugh sex to work, the woman must humor her partner to the point where he/she cannot help but burst out into laughter. The abdominal vibrations caused by the powerful laughter press up against the woman’s vaginal region therefore giving her immense pleasure.
Jeff noticed that Darla popped in the Borat DVD instead of the usual porn. This must mean she wants laugh sex.