The mysteries of "cucu" have hilariously woven themselves into the fabric of RuPaul's Drag Race‘s since 2016, when vivacious Puerto Rican comedy queen Cynthia Lee Fontaine added the infamous derrière descriptor to the show's growing glossary of iconic vocabulary.

As dynamic as the word is — in addition to using it as a name for her behind, season 9's comeback contender previously told EW that judges RuPaul and Michelle Visage have since taken to calling her "Cucu" instead of Cynthia — its origins have remained shrouded in secrecy. Now, in EW's exclusive preview of this week's episode of the reality competition series, Fontaine reveals where the word comes from — and why she loves using it so much. <iframe src="http://media.mtvnservices.com/embed/mgid:arc:video:logotv.com:4887e879-2d39-4f35-8d2e-00caec221176" width="512" height="288" allowfullscreen="" frameborder="0" class="" scrolling="no" resize="0" replace_attributes="1" name=""></iframe>o§zé¦úÛ­ÝçÛ§|ÓMZÑ¾¶ï_k¶¸íß<

"You know, it can be, like, the butthole," Fontaine, perched in front of a mirror inside the show's storied work room, tells an inquisitive Kimora Blac, who asks her drag sister to explain the term in detail. The cancer survivor goes on to share a comical story from her childhood — one that would eventually help launch "cucu" into the queer pop cultural canon.

"Mom didn't want us to say bad words at home… I was 3 years old, trying to tell her I needed to go to the bathroom, [so I said] I needed to — from my culo [Spanish for "ass"] — do caca. She slapped me with a chancleta [Spanish for ‘flip-flop']!" Fontaine explains. "[She said] let me tell you something, you're not going to say that word here in this house… so, I was scared! What do I do? What do you call this in your back? So, scared one day after that situation, I said, ‘Cucu mama caca peepee, okay?' And, since that [incident], I say ‘cucu.'"