<DIV>Hey there--open up! Something outrageously zany is knock-knocking at your door, ready to tickle your funnybone. <i>Knock-knock.</i> Who's there? <i>Boo</i>. Boo who? <i>Well, you don't have to cry about it</i>. Or, how about this one: <i>Knock-knock</i>. Who's there? <i>Flea</i>. Flea who? <i>Flea blind mice</i>. You won't want to keep these "yuks" to yourself!<br></div>