Hallmark would designate today Take Your Pants for a Walk Day while gone-ta-pott.com says today is Take Your Houseplants for a Walk Day.
While we here at The Blog of Days are reluctant to insert ourselves into any controversy, this one seems easily resolved, doesn't it?
If you spend today (or pretty much any other day) going for walks without your pants, tomorrow will almost certainly be "Ask Your Friends for Bail Money Day."
Therefore, we recommend that you don't take a walk anywhere in public without your pants today or any other day. However, if you're so inclined, take your philodendron or African violets out for a nice stroll.