I swear ta god I once read a story about this guy, around the time of Turing and Bletchley Park, who was an expert parachutist. His boss had a 4th floor office. And every time this parachutist left his boss’ office, he’d just jump out the 4th floor window because even without a parachute, he knew how to land without hurting himself.

(I’m not intentionally making this up, but unfortunately I can’t find any references online to it…)