1. The characteristic behaviors, tricks, or pranks typical of a prankster; playful or mischievous acts or tendencies.
Usage: informal; usually plural; often used to describe a pattern or collection of pranks rather than a single act

Examples

• His pranksterisms in the office included hiding coworkers' keyboards and rearranging their desk supplies.
• The class clown's pranksterisms finally got him sent to the principal's office.
• She tolerated his pranksterisms because they were always harmless and good-natured.
• The camp counselors had to put a stop to the campers' pranksterisms during the overnight trip.
• His reputation for pranksterisms preceded him, so nobody trusted him on April Fools' Day.