Caroline Ardulino - Carrying a friend

Each girl's task is to carry the other girl in her arms and try to make her pee herself. If any of the girls drops the other girl before she reaches the other end of the "field" she has to drink ice tea as a penalty. There's no need to emphasise that the girls' bladders are about to burst! Which of them will win and push on the other girl's bladder hard enough to make her wet her pants?