проказа(an illegal, unusual, or entertaining activity • The whole incident started as an innocent caper. -- невинная проказа (Cambridge Dictionary)ART Vancouver); выходка(an illegal, unusual, or entertaining activity (Cambridge Dictionary) • Authorities in Canada arrested a man for allegedly breaking into a pair of stores and cops say they were able to identify the suspect by way of his pet chihuahua, which inexplicably accompanied him during the capers. (coasttocoastam.com)ART Vancouver)
ограбление(Who did you work whit on that bank caper?Interex); шантаж(Interex); событие(Another caper like that and I call your parents. Ещё одно происшествие как это и я звоню твоим родителям. Interex)