When the zoo-keeper had asked for volunteers to help with feeding time at the zoo, Billy and Ann had put their hands up enthusiastically, thinking they would get to help throw the meat to the lions.

They were surprised when he told them to take off their clothes but figured it was to stop them getting messy.

Now, tied up and naked in a wheelbarrow, they felt embarassed and scared.

The other children cheered as the zoo-keeper threw first Anne then Billy into the enclosure.

"Don't forget to come back at 4!" He announced when the lions were done eating. "Anyone want to volunteer right now?" At least twenty hands flew up!