A guy was trying to cross the border into the next country on his bicycle. Two suspicious-looking bags were tied to the back of the bike.

The border guards stopped him and said, “Hey, buddy, what's in the bags?”

“Sand,” said the man.

The guards pulled off the two bags and examined them. They both contained only sand, just as the man said, so they waved him through the border.

This went on each week for six months. And each time the guards examined the bags they still found only sand.

The skunk sat on a stump, the skunk thunk the stump stunk, but the stump thunk the skunk stunk.

The clothes moth's mouth's closed.

She shall sell seashells.

How much wood would a woodchuck chuck if a woodchuck could chuck wood?

Bugs' black blood.

Eight apes ate eight apples.

Cool clean canned clams.

A stiff stack of thick steaks.

Toyboat, toyboat, toyboat.

One week the man stopped coming. One of the guards ran into the man downtown after work.

“Hey buddy,” said the guard. “You sure had us going. We knew you were smuggling something.”

The man just grinned.

“C'mon and tell me,” whispered the guard. “I won't say anything. What were you smuggling?”

“Bicycles,” said the man.