I have a collection of doo-hickeys.

I have a collection of doo-dads on my shelf.

The song has a doo-woppy rhythm that makes you want to dance.

The doo-woppers harmonized beautifully on stage.

He is a talented doo-wopper.

I accidentally stepped on dog-doo.

Cock-a-doodle-doo! The rooster announced the start of a new day.

Every morning, I wake up to the sound of cock-a-doodle-doo.

Whoop-de-doo! I finally finished my project.

The fireworks display was a whoop-de-doo event.