When in doubt (or bored, or curious)

How to not take life seriously - put swimming pants on head. Because, in the middle of getting ready for church, one should have a good belly laugh.
I should note, this isn't isolated. He also puts shorts, pull up nappies, boxes and his teddies on his head. He thinks it is hilarious. We do too. But I have done a sweep of the house and put up all the plastic bags...