Dinkusball 

Dinkusball is a game involving two people, 15-20 feet of open space about the width of a bowling lane, with cushiony, soft croquet mallets called "linkuses." The object is to score 10 "doodles" before your opponent. To score a doodle, you smash a small foam ball called a "jib" as hard as you can right out your opponent. Alternate turns as you play and a shot attempt is any motion that causes the jib to move. Have fun and dont be afraid to wail away when unsuspecting family members are close by.

jib linkus Dinkusball doodle

Dinkusball by dinkusballrocks April 9, 2009

dinkleball 

a person who does things that lack common sense

I can't believe that dinkleball did that

dinkleball by scooter2079 July 11, 2014

Dinkball

When you are playing tennis and are only barely hitting (dinking) the ball.

Man, I have no power forehand or backhand today, I'm playing frickin' dinkball.

Dinkball by -Tennis guy May 13, 2005