Monday morning they were playing while I did dishes and talked to my mom on the phone. Suddenly I heard BSG say "Oh, [Back Seat Boy]!" from the bathroom in a very disapproving voice. I turned around to find BSB pushing the play mop in front of him, happily pretending to clean the floor, but this time, the mop was actually wet. "[BSG]" I called, "is that water from the toilet?" "Yea", she answered back. "Did you flush the toilet when you were done going poopy?" "No."
One word. Gross.
So I hung up with my mom and walked into the bathroom in time to see BSB plunging his mop into the toilet again. Luckily BSG's poop was very small and well-formed, so the mop wasn't actually touching poop, but still. It was touching toilet water than contained a turd in it. I took away the mop and put it where I thought BSB couldn't reach it, then flushed the toilet and started washing the trail of wet left behind by the mop.
I was in the kitchen on my hands and knees when I heard BSB's familiar little staccato steps behind me, and turned around to see him holding the mop over his head while drops of water fell into his hair. Awesome.