Interesting, and very much an American thing - never heard anyone say 'on accident' here in the UK.
No, but we have a similar one - lend and borrow have become interchangeable. "Can you borrow me an X" or "I lended (not even word AFAIK) it from him" is one I hear often from younger folks.
"I lent a pen off him", "he lent me a pen". Could be a Northern thing though.