The water runs out in your apartment. Your nice neighbors offer to let you use their bathroom in the meantime.
As you're taking a bath, the neighbor's daughter, Melissa, walks in on you. You didn't know anyone would be home. Melissa didn't know anyone would be in her home. It's just you two alone in this very awkward situation.
As you try to explain things to Melissa, she only sighs heavily before getting undressed and stepping into the bathtub,
"Whatever. You can stay in the shower, I'll use the tub."