It’s not passive aggressive. You just don’t like the response. As I said rather clearly or bluntly - there is not a female sex organ that stores volumes of mystery liquid that is not urine. Because it has not sat in the bladder for a period of time concentrating ureic acid does not make it something else. The study clearly indicates that the bladder even if empty refills quickly during the act and is expelled. If this is your thing that’s cool and no problem but calling a horse a whale doesn’t make it a whale. As to the OPs concern others have addressed it already. Pads, in the bath, shower or an area that is easily cleaned up is the best option. If you’re into this I would think the recommendation for a highly absorbent pad like a puppy pad would be the best option as linen cleaning can be an issue and or soaking into a mattress or flooring rather problematic.