Spanking
When a parent spanks their child, they usually strike the child's buttocks with their open hand.  Sometimes they  use other objects such as a belt or a wooden spoon.  At times the child's buttocks may be clothed.  At other times they may be bare.  Often the parent makes the child lie across their lap.  At other times, a parent might tell a child or teenager to bend over or lie face down across a bed.