Pattycake In Training Videos Does Anybody Know The Origin Of The Word Pattycake?

Does anybody know the origin of the word pattycake? - pattycake in training videos

This is a variant of "Pat a Cake", a description of what the man is not in the work of Baker.

Pat a Cake Pat Cakes
Baker's Man
Bake me a cake as fast as possible.
Pat and Mark puncture with a B
Put in the oven for baby and me.

Moreover http://www.mw.com/cgi-bin/dictionary?va ... confirmed.