Imogen: Mom, can I come in the bathroom with you? I have to pee.
Me: I'm peeing right now. Can you use the bathroom downstairs or wait a minute?
Imogen, entering bathroom: No! I have to go now!
Me: Honey, we can't go at the same time.
Imogen: You're almost done.
Me: Okay. Just go, we'll flush after.
Imogen, peeing and looking in the toilet: Mom! Our pees are having love!
No response from me. What do you say really, to that?!