Okay so I’m coming at this from three ways as a 44F.

1. it’s urine. It’s a cup. You can wash it. I’ve seen far more gross shit in various dishes someone forgot to clean up and left in the fridge or oven or whatever. Like I once boiled a chicken carcass to make broth, put it in the cold basement to cool, fucking forgot it and went on vacay. Found it like 3 mos later in the cubby under my stairs where i had put it. I wasn’t going to toss a $100 stock pot for that. Note that I have horses and dogs and do wildlife rescue so there’s shit in my house that has been used on the farm and not much grosses me out. The only thing I won’t let anyone reuse is a thermometer if I’ve put it up the butt of one of the animals.

2. why the fuck is he urinating in a cup? Seriously. I grew up in a house with 6 people and one bathroom. Having to go outside to pee behind the barn in an emergency was a thing. But in a cup?

3. why is his story changing? Just be honest!

I dunno. 2 and 3 would be my focus. Odd behavior and weird lies.