ser·en·dip·i·ty n.

1. The faculty of making fortunate discoveries by accident.
2. The fact or occurrence of such discoveries.
3. An instance of making such a discovery.

Every so often in our travels we come across a visual joke or pun that tickles the purile side of our nature. We've put a few on this page for those with similar sillyness.
(Please don't reproduce the pics without our permission.)