beetle, beadle

Beetle or beetle means an insect of the order Coleoptera, with a hard shell and chewing mouth parts--
The cat is trying to catch a beetle that crawled under my desk.
A beetle usually has wings hidden under its shell.

Beadle or beadle means an officer or assistant employed by a church or possibly a school--
The beadle had to ask them to be quiet during the service.
The beadle will help you find a place to sit.

Now that you know that, you can say--
"He got in trouble with the beadle when he put a beetle on the shoulder of the child in front of him."