Open mouth. Insert ONE foot.
I am a complete and thoughtless idiot.
Today, we took my mom to the doctor. As we reached the door, I was first. I grabbed the knob and pushed in. The door moved easily as on the other side was a couple attempting to pull the door open to exit at that exact moment. I quickly apologized for perhaps pushing the door into them.
They made some remark about doors miraculously opening. Apparently they had been having some difficulty as the woman was being pushed in a wheelchair and she could not properly pull the handle.
I leaned into the room and put my hand into the middle of the door to hold it open, keeping my body in the hall. One of my feet was incredibly close to the doorway. As the couple began to exit, the husband remarked "Watch out for your foot. We don't want to roll over it."
Automatically, I replied with my standard, "That's ok, I have another."
Just at that moment, I realized the woman in the wheelchair had only one leg.