[forthefuture]

"An" in American sounds like "Anne", so I don't think that explains it. As an aside I've never heard someone say "on accident" so it might just be stupid people. Another good example is "would of" instead of "would have".

[lstamour]

To be clear though, you could contract "would have" as "would've" -- the mistake there is again the mis-hearing as "would of", I suppose.