Кто бросил валенок на пульт?!

Years ago a pal and I installed a system for the Secret Service that had thousands of very expensive switches on panels in a control room. We battled with a unique set of bounce challenges because the uniformed officers were too lazy to stand up and press a button. They tossed rulers at the panels from across the room. Different impacts created (and sometimes destroyed, but hey, it's only taxpayer money after all) quite an array of bouncing.

A Guide to Debouncing, or, How to Debounce a Contact in Two Easy Pages, by Jack Ganssle