Tomorrow night, Mammalian Diving Reflex’s All the Sex I’ve Ever Had opens at Plays and Players, where you can also check out This is Not a Theater. For a glimpse of what’s in store, as some, well, experienced practitioners talk about their sexual lives and histories, watch below:

Mammalian Diving Reflex’s All the Sex I’ve Ever Had runs September 13 and 14 at Plays and Players, 1714 Delancey Place, Rittenhouse Square. Both shows 7:00 p.m., $20 to $29.

–Nicholas Gilewicz