屋外の暑さの中で彼女のジーンズを濡らす

This day is incredibly hot. She has to keep having more and more water to quench her thirst. But all that water.. has to get out. She wanted to pee, but her boyfriend called and she has one hand on the phone. Unable to take her pants out, she just pees in her jeans, and then she waits hoping her jeans will dry on her.