Taking a fall. The fundamental skill of professional wrestling. Every time a wrestler hits the mat, that's a bump. Some bumps are routine (a back bump off a clothesline), some are terrifying (Mankind off the Hell in a Cell). The ability to bump well and safely is what separates professionals from backyard idiots. Your body keeps a running tab of every bump you've ever taken.
"He took a massive bump off the top rope to the floor. The replay made everyone in the arena wince."