Sex talk on The Bachelorette is par for the course, but what happens when the guys have to talk about sex with a classroom full of kids?

On Monday's episode, Kaitlyn takes her group date back to school for a lesson — taught by them, of course — in sex health and education. Poor Josh, a welder from Idaho, is given the awkward task of explaining what a period is. Let's just say he might've had an odd choice of words.

The Bachelorette's Chris Harrison: Kupah took a ginormous dump on Kaitlyn's night

Watch above.

The Bachelorette airs on Mondays at 8/7c on ABC.