A sailor was caught AWOL as he tried to sneak on board his ship at about 3 am. The chief petty officer spied him and ordered the sailor to stop.

Upon hearing the sailor's lame explanation for his tardiness, the officer ordered the sailor, "Take this broom and sweep every link on this anchor chain by morning or it's the brig for you!"

The sailor began to pick up the broom and commence performing his charge. As he began to sweep, a tern landed on the broom handle. The sailor yelled at the bird to leave, but it didn't. The lad picked the tern off the broom handle, and tossed it out of his way. The bird left, only to return and light once again on the broom handle, and was once again tossed overboard.

The sailor went through the same routine all over again, with the same result. He couldn't get any cleaning done because he can only sweep at the chain once or twice before the blasted bird returns.

When morning came, so did the chief petty officer, to check up on his wayward sailor.

"What in the heck have you been doing all night? This chain is no cleaner than when you started! What have you to say for yourself, sailor?" barked the chief.

"Honest, chief," came the reply, "I tossed a tern all night and couldn't sweep a link!"