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Which way is upside?

Posted by RRC on June 09, 2006

In Reply to: Which way is upside? posted by Victoria S Dennis on June 09, 2006

: Which way is upside?

: In the US, when somebody slaps you "upside your head", is that a downward blow from above, or an upward blow from below? The word isn't used in the UK.

I don't think it really matters. IMO, upside in this phrase is not directional but positional - it basically means the same as beside, alongside, against the side of. I would expect a straight across slap against the side of the head.