When Pigs Fly…."A Reminder to live your dreams, no matter how impossible they may seem!"
A flying pig is a symbol of an impossible event coming to pass. Possibly the first occurrence of a pig actually "flying" occurred in 1909 when the British aviation pioneer Lord Brabazon made the first live air cargo flight with a pig in a basket tied to a wing-strut of his airplane. Additionally, if enough thrust is applied, any pig is capable of ballistic flight.
John Steinbeck's Pigasus was used as a personal stamp to symbolize Steinbeck as "earthbound but aspiring.... A lumbering soul but trying to fly...(with)...not enough wingspread but plenty of intention."