Car boot/trunk sales or boot/trunk fairs are popular with the British. They replaced jumble sales with people coming to buy & sell used household and garden items.
The term comes from the selling of items from a car's boot or trunk.
The magical being who is responsible for all hook-ups and sexual encounters. Imagine the tooth fairy on Viagra and in a sprightly bondage outfit and you have the Booty Fairy.
Just when I thought I was going to be leavingthe party alone, I was paid a timely visit by the Booty Fairy.