A sleepover, also known as a pajama party or a slumber party, is a party most commonly held by children or teenagers, where a guest or guests are invited to stay overnight at the home of a friend, sometimes to celebrate birthdays or other special events. A lock-in is a similar event held in a setting other than a private home, such as a school or church.
Typical participant activities include staying up late, talking, eating and playing until falling asleep. Sometimes sleepovers involve another activity prior to the actual sleepover. For example, dinner at a restaurant, skating, or other scheduled events. Sleepovers are usually held at one participant's house, with other guests sometimes bringing their bedtime things, such as pillows or sleeping bags. Common activities include playing board games or video games, having pillow fights, watching movies, midnight feasts, playing party games such as Truth or Dare?, light as a feather, stiff as a board, and spin the bottle, building forts out of pillows and blankets, or having a "spa night", in which participants polish their nails and toes and put on facial masks. Apart from bedrooms, sleepovers can be conducted in tents, trailers, and on trampolines.