Hijinks (noun)

1. Mischievous or playful behavior; mischief; horseplay.
2. A trick, prank, or practical joke.

Origin:

Of unknown origin, perhaps a modification of a word meaning capers or tricks.

Examples:

1. The kids got up to all sorts of hijinks after the school day ended.
2. The college students were famous for their hijinks during spring break.
3. The mischievous duo was always up for some hijinks.
4. The group was known for their hijinks on camping trips.
5. The party was filled with hijinks and laughter.