Toilet Tornado warning for your viewing area

I have a 13 month old. She is sweet and very loving. I decided I should check out a baby development chart and see where she's at. You know, make sure she is on track, developing okay, that kind of thing. This is what I found:

13 Months

Most babies should be able to . . .
Say two or more words other than mama or dada ("Yucky" and "Nonononono" count, right)
Stand well (while in the shopping cart or her high chair)
Bend over to pick up objects (like the contents of my purse)
Take a few steps (in the opposite direction)
Walk with help (yeah, help to where she should be, not where she would like to go)
Drink from a cup independently (throwing cup independently?)
Say three or more words other than mama or dada (uh-oh, don't hit, and sister)
Respond to command without gestures (when I tell her no, she would totally flip me the bird if she could)
Scribble with markers or crayons (on the floor, and fridge

Try and lift heavier objects (shoes into toilets, perhaps)
Roll a ball back and forth more actively (until she found the wipes and decided to empty them all out)
Combine words and gestures to make his or her needs known (once again, the bird and "I'll do what I dang well please"...if she could)
Walk well

Nowhere on this list does it say practicing the backstroke- in the toilet. Yes, I have a bona fide toilet traveler, where in her travels of just today she managed to test the waters in not one, oh not two, but 3 of our household lavatories. She makes a mad dash behind her older siblings, for while they are potty trained, they are not quite trained to shut the lid AND the door to the bathroom. The door is merely there for personal challenge purposes, she can open those quite fine. Sometimes it alerts me to well laid plans of my little Porcelain Bowl Princess, other times it buys me time to get her before she goes dipping. Today, 2 shoes were christened. I hope they enjoyed their refreshing dunk. The second time a piece of modeling clay from the oldest's desk went for a dive. It sinks. All while the clock is ticking on getting to school.

I spoke to her other parental figure about our Bathroom Houdini, and how we need toilet locks. Which is probably just a small deterrent until she is 14 months. Now she is awake, and is no doubt concocting a new plain for medaling in the swirly Olympics.