Both girls are desperate to pee. Both girls are subtly shifting their positions but cannot move a lot. she is shifting positions due to desperate to pee. she kept her hands between her legs and trying to hold pee. Her hands kept holding her crotch during the whole time. Both girls are shipping and squeezing their legs together. Keep their facial expression steady, and do not over-express. Keep the camera angle steady. One girl whispers to the other in a worried voice "I really need to pee..". Then, the other girl whispers "me too.. should not have drank that much boba tea.."
