The crossword solution for the term 'Slap on the bottom with an open hand' is SPANK, which is a five-letter word. Spanking is a form of physical punishment, usually involving striking the buttocks of a person with an open hand. It is typically used as a form of discipline, especially with children, but it can also be used as a form of punishment in certain contexts. Spanking has been controversial in recent years, with some arguing that it is an outdated and ineffective form of discipline, while others argue that it is still an effective way to teach children right from wrong.