Too funny! I hate it when people think it's socially acceptable to carry on a phone conversation in a public restroom. No one want to hear you going to the bathroom and I don't know if you are talking to me, or are off your meds.
I have wasted countless gallon ziplock bags when traveling - just unscrew the lids and put some plastic wrap over the opening then screw the lid back on for a much easier spill solution! (not quite as safe as a plastic bag, but a good idea!