A mix of racquetball and tennis, most notably played by Ralph Drabble.
Ralph: "Hey, Ed! Up for a game of Drabbleball?"
Ed: "Why not? We'll use Bryant's old Crankshaft ball."
Ralph: "The ball needs to be softer. You don't want one of my Drabbleball shots bouncing off your head with a baseball!"
Beatrice: "Drabbleball my foot! What on earth are you talking about?"
Ed: "It's a mix of racquetball and tennis. You'll love it!"n