Most card playing games use the "Jack."
Cracker Jack is famous for its connection to the sport of baseball.
A person would use a Medicus 5 iron in the sport of golf.
Most Jeeps do not have Uni-Bodies, so you can jack them up on the frame or you can use the axles depending on what your trying to get at.
Baseball, football, and any other sport.
golf
jack dempsey played in swimmming
Jack Dempsey and Gene Tunney participated in the sport of professional boxing.
air hockey
Golf
Gymnastics
baseball bats
jai alai (sport)