They think of an excuse

Lisa: "We really have to think of something to tell people why we are dressed like this."

Melissa: "I agree, maybe we could tell our parents we want to go for a swim."

Lisa: "Yes that sounds like an idea. Hopefully they will let us off."

Both girls walk back towards the table and take a seat.

Lisa: "Mom we really want to take a swim tonight. So we both took on our bathing suits. Can we go for a swim please?"