I don't think this falls under favorite spanking position, since no spanking I get is fun. The most embarrassing and usually the one of two ways I get spanked is:
After being warned and told I'm getting spanked, depending what I did, being lectured,and asked why I am being spanked. Even worse if it's with anything and asked to get the implement. Stripped waste down, again asked why I am being spanked, over the knee, bare bottom and spanked. No talking, usually by the end crying. No touching and if I try to stop the spanking at any time, number increases. When finished, asked again why I had earned the spanking and if I'd learned my lesson. Told to stand up, and assume to position the corner for however long.
Fortunately I have not received any spankings while anyone was present, it's almost always at home, thank goodness. I've been spanked, but not a real spanking while out before, pulled into a family rest room, a preview of what is to come and at that point earned. Thank goodness never bare bottom or while anyone was present. I'm sure if my behavior doesn't change for the better soon, it's a possibility and would be the worse spanking I could image. Being out, pulling into family bathroom, I'm sure some people would be able to hear, and having to walk out, tear stained face, slight waddle of a sore bottom and having people know what just happened.