I had an itch on the tip of my nose. I finished the task at hand before I finally relented to the itch and lifted my hand to rub it when a client came through the door behind me. I waited until he had walked past my desk and was practically out the front door before I raised my hand to rub my nose. Of course at that exact moment he turned around to wave and say goodbye. I not so gracefully jerked my hand away from nose and waved back with a parting acknowledgment.
He probably thought I was picking my nose. Just great. LOL!