The Juventus president at the time of Boniek's tenure with the club, Gianni Agnelli, nicknamed him Bello di notte ("Beauty at night", which is a play on the title of the Buñuel movie Belle de Jour) because of his excellent performances in European club tournament matches, which were played in the evening; indeed, during continental tournaments, his opponents usually allowed him more space and time on the ball than in Serie A, which allowed him to get forward, undertake individual dribbling runs and score goals himself, or drop deep, link up with midfielders and create chances or provide assists for his teammates, courtesy of his passing, vision, and clever movement.