I was so almost right

My special lady called me a "kuilys" just now, and when I denied it she accused me of not even having any idea what it even is. I guessed it's a castrated bull's penis, and she laughed at how wrong I was: it's a non-castrated male pig. Now come on, farm animal, something having to do with castration, was I just about as close as you can get without being right on the nose or what?!