تعريف royal bumps في الإنجليزية الإنجليزية القاموس.
A ritual of two or more persons holding another person by the arms and legs, face up, while bumping them repeatedly on the floor. In modern times it is a lighthearted affair, generally performed only on a young person's birthday with the number of bumps corresponding to the person's age in years. Historically it was a hazing