As a sort of joke my partner and I call them Lentils.
Both of us are androgynous/neutrois identifying and we get a lot of question about what's in our pants. One day, my partner said that they (singular pronoun they) had "Lentils" in their pants.
When I said that I didn't have lentils in mine, they sent me a can of lentils in the mail with a ribbon tied around it.
So now I have lentils too.