My step-daughter has the smallest bladder ever. I see her fidgetting in the passenger seat and I knew right away that she should've used the restroom at the last gas station but didn't... again! Her fidgetting is getting worse & she's grabbing her crotch and getting frantic. I tell her to find an empty plastic bag in the back & put it underneath her. Good timing because she's already piddling in her panties! She's always leaking in her panties. "did it get on the seat?" I have to pull over in a random parking lot & when she gets out, she realizes it's too far to hobble to find private bushes and she pisses her panties. At first it's a few drops between her shoes and then it's a HUGE waterfall of pee just gushing out & splashing loudly on the concrete! Cars passing by can totally tell that she couldn't make it to the bathroom in time. Now she's gotta sit in her wet panties and walk up to the hotel room like that, flashing a few ppl on the way! it was a lotta pee! I'm sure she didn't learn her lesson & it'll happen again next week