There was a sign language that deaf fast pitch
softball players never forgot. During the late
sixties, Frank Hand was the coach of the deaf
New York Golden Tornadoes fast pitch team
that played in a New York fast pitch league.

He was always angry that his batters were
missing these signs for bunt, steal,
hit and run, etc. He then thought of a
new sign language that his players
quickly remembered – “dirty language”
ASL signs for these signals!

Of course, hearing opponents had no idea
what these signs were.