That reminds me of a funny ... as a teen I worked at a salvage yard. The owner was a hard old man that didn't like stupid just as much as me. We used that saying (righty tighty, lefty loosie) all the time with the kids (younger that I was at the time) that didn't know ****. The ones who often couldn't tell right from left, he would take the hose or coffee or whatever was around and wet their right hand with it. Then he would say ... "Your right hand is your wet hand". I loved that one.