Nun Expelled For Garden Activity

Alright, listen up, you big dummy. This joke is about a nun, right? Nuns live in convents and are usually, like, super religious and celibate. They don't have sex. So, when the joke says she got "caught squatting on the cucumbers," it's playing on words, you simpleton. "Squatting on cucumbers" sounds like a suggestive, non-celibate act. Get it? It's funny because it's a very un-nun-like thing to do, and it implies something dirty happened in a holy place. You're probably still thinking about actual gardening, aren't you? Classic you.