Nether here

E., just now, looking at the cat curled up on the sofa with a very puzzled expression on his face:

E.: What is that? Is that her vagina or her bum?
Me: If anything, that'd be her vulva but -
E.: *panicked* WHAT?? She doesn't have a vagina??

[enter mirth]

E.: What?? In cats it's a triangle isn't it, that's the vagina. You know how it looks right? It goes like this: *makes descriptive hand gestures in all seriousness* Must I draw it for you?

[unmitigated mirth]

E.: What?? Why are you still laughing? Stop it. Stop laughing.

[miiiiiiirth]

E.: What are you writing now? Oh don't be childish.