Nikki plays Tinder Tapout with Rachel Feinstein and Rory Scovel, subjects her friends to a lie detector test and attends a foot fetish party.

Nikki makes sexting classier, quizzes her guests on the latest developments in the erotic sciences and hosts a game show to help strip club patrons win their money back.

Nikki and Kyle Kinane provide the dialogue for a porn scene that is repeated by the actors.

Nikki sits on a sex toy and discusses female ejaculation with Sara Schaefer.

Hotel maids reveal just how dirty those rooms are, Chris Hardwick and Jen Kirkman play Tinder Tapout, and Nikki retires a sex move.

Nikki weighs the pros and cons of sexting with T.J. Miller and Pete Holmes, considers entering into an open relationship and tries out a marijuana-infused lubricant.

Moshe Kasher and Grace Helbig share items from their sexual bucket lists, engaged couples apologize to their friends, and Nikki rails against bikinis.

Dan Savage gives advice to Nikki's younger self, Todd Glass debunks gay stereotypes, and Nikki interviews a man who loves to sniff women's underwear.

Nikki explores the world of pegging and plays a round of Tinder Tapout with special guests Patton Oswalt and Natasha Leggero.

Nikki attends a class on cuddling, plays Tinder Tapout with Adam Pally and Mary Lynn Rajskub, and gets to the bottom of why more women are getting labiaplasties.

Nikki teams up with Kristen Schaal to provide dialogue for a porn scene, plays Sext Symbols with Chris D'Elia and Kate Walsh, and quizzes strip club patrons about women.

Nikki sticks it to the judge of the Stanford rape case, helps Omarion produce a song about awkward sex, and plays What's Your Number? with Riki Lindhome and Anthony Jeselnik.

Nikki visits a Trump rally, gets an inside look at prostitution from a sex worker, and chats about cheating with Marc Maron and Maria Bamford.

Nikki volunteers for an orgasm study, plays I Come Bearing GIFs with Liza Treyger and Jim Jefferies, and interviews people about where they prefer to finish after sex.

Nikki discusses dates gone wrong with Dave Waite; plays Tinder Tapout with Ron Funches and Katie Nolan.

Nikki delves into the topic of the popularity of over-the-counter male enhancement pills with Dr. Drew Pinsky; helps unmarried couples write their prenups.

Nikki provides the dialogue for a hospital porn scene, calls out annoying behavior on social media with her guests and works with couples to plan for their eventual breakup.

Nikki visits a museum full of people's old relationship keepsakes, debunks myths about bisexuals with Margaret Cho and rails against the injustices of America's wage gap.

Nikki heads to Las Vegas to make an attempt at spending 24 hours in a strip club; Jim Norton and Bridget Everett join Nikki for a round of Tinder Tapout.