March 10, 2016 10:10 AM

Caitlyn Jenner is on one very eventful cross-country road trip on I Am Cait.

In a sneak peek at Sunday’s episode, the reality star walks in on her friends hanging out on the bus as her hairstylist Courtney Nanson is about to open a “special package.”

“What do you think it is?” Nanson says as she begins to unwrap it. “A tennis bracelet? Diamonds? Better – it’s my favorite thing in the world.”

“Oh God,” Jenner, 66, says as Nanson reveals what’s inside: a bright pink vibrator!

“I’m learning so much!” Jenner says. “A vroom, vroom.”

“A what? What did you just call it?” Hanson asks.

“A vroom, vroom!” Jenner repeats as Nanson hands her the sex toy.

Jenner’s close friend Candis Cayne then grabs the vibrator, joking around as she pretends to use it as a phone. Watch the clip to find out how Jenner reacts!

I Am Cait airs Sundays (9 p.m. ET) on E!

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