No, this isn't a suggestion that you pick up some tips, or that it will help you with - ahem, "longevity", later that night.
A new study from the Interdisciplinary Center Herzilya (IDC Herzliya), Israel, has found that watching porn before a first date could guarantee you a second.
It's essentially because it gets you in the mood for love.
This isn't to suggest that it makes you want sex, so you have sex - the world is not that simple.
The study found that "sexual priming" led to participants in the study to be more open with new acquaintances, and this forthcoming nature helped along the chances of a second date.
Professor Gurit Birnbaum,of the Baruch Ivcher School of Psychology at the IDC Herzliya completed three studies, looking at 246 heterosexual participants.
Those who were shown sexual stimuli were more like to be open in a dating situation.
The work is not restricted to porn - however you get to orgasm is your prerogative.
In the first study, they found this even worked subliminally. Participants were shown subliminal sexual stimuli, before they communicated with a member of the opposite sex over instant messenger. Compared to the control group, they were much more open about themselves.
Studies two and three extended this to supraliminal sexual stimuli, and in the context of face to face interactions between male and female undergraduate students.
According to the study:
The findings indicated that sexual priming led participants to reveal personal intimate information to an opposite-sex stranger.
This self-disclosure, in turn, further increased interest in having a first date with the stranger
Human bodies have evolved to motivate you to reproduce, so you're at your most charismatic and open in the minutes following orgasm.
It also means that when you meet someone to whom you're attracted, you activate your sexual system.
This pre-date porn/mister happy time is like a primer, or a leg up.