I ordered two Jack Roses at the bar.

He is a cracker jack programmer.

He is a cracker jack at solving puzzles.

He is a crack-a-jack player.

He is a crack-a-jack at solving puzzles.

Jack pudding is a traditional English dessert.

The circus had a group of jack puddings performing hilarious acts.

The court jester was known as a jack-pudding.

The circus performers were dressed as jack-puddings.

The circus performers were dressed as Jack-puddings.