Oh, Dears That Aren't

I was reading an old novel this afternoon where a character talked about giving his daughter "pick-a-back" rides. That led to a little research on the origins of the phrase "piggyback." Then I explored "card shark" vs "card sharp." What are some other words or phrases that we might be tempted to think are errors, but are really just regional or historical variations?

Kitty-corner? Catty-corner? Katter-corner? Cater-corner? Catercornered? Cat-a-corner? Oh, dear!

Butt naked vs Buck naked .... meh, it's butkus.

Piano vs. Pianer (Pie-an-nurr)

ask (ascian) vs aks (acsian) - Old English dialectical variations dating back to the eight century. Modern Scots uses 'ax.'

They might use ax, but their foreskins still reek of Cock-a-Leeky.