They use them to clean stuff out?
That is one way to put it. Early depictions/etchings had naked witches dancing around fires, sexually riding broom handles. The Discover channel is full of discovery.
Speaking of sexual discovery, my family goes to Border's Books the other night and in the parking lot near our car two gulls are screwing. The male gull on top is laughing as loud as he could while humping the female, while the female was making pitiful/painful screetching noises. It was just too surreal, bizzare & funny.