Some innuendo.

A human boy puts together a bedroom for two Borrowers with only one bed. The boy Borrower lays on one side of the bed and pats the other side telling the girl Borrower "I saved you a spot." The girl seems uncomfortable with the idea, but she lays down next to him. He says "I knew you'd come around." and leans over to kiss her, but she grabs his jacket and throws him on the floor, where he sleeps for the night.

Two borrowers are captured by humans.

Borrowers are frequently in danger of being seen, captured, or run over.