Over MY dead body?

Today we went for movie. It is a new movie. As we are queueing we chatted and finally when it reached our turn, friend asked me to tell the ticketer.

My brain told me it is called "Over HER Dead Body" but my what comes out was "Over MY Dead Body". Boy am I embarrassed. The ticketer don't know how to respond except to laugh. My friend was laughing, even the customer next line was laughing......

So pai seh!