It can be pictured as a watermelon seed between one's index finger and thumb.

He slipped through the door like a watermelon seed.

When we're at the games, my uncle can put 50 of these watermelon seeds into his mouth and eat them all.

It sounded like the cloud Irene had disciplined with the watermelon seeds, and that could mean trouble.

At the last moment, the forces inside the phenomenon seemed to add to their momentum, spitting them out like a watermelon seed.

Sun offered David a saucer filled with dried watermelon seeds.

The crowd threw the guy out the door, like a watermelon seed.

As youngsters we spent a lot of time trying not to swallow a watermelon seed.

You can't exactly say, "Click the little thing that looks like a watermelon seed on two beach balls."

The river spat them at those rapids like a watermelon seed in a millrace.