Marry the Poor Girl (1921)

At a house party, Jack Tanner, one of the guests, accidentally falls into a fountain. To ward off a cold, he gets drunk. While in this condition, he mistakes his room and enters the bathroom next to Julia Paddington's boudoir and goes to sleep in the bathtub. The next morning Mrs. Paddington insists that he has compromised her daughter's reputation beyond repair unless he marries her.