Does anyone really say 'er'?

[Coola Yagami]

I'm not sure about modern day, but back in the day most comic book characters whenever they were caught stammering, trying to lie or make an excuse to cover up something, they would always say 'er' instead of 'uh' or 'um'. Kinda like someone caught trying to steal a cookie "I wasn't trying to steal a cookie, I was... er... counting the cookies to make sure no one stole them". But I have never ever in real life seen anyone ever say that in real life. Not even in live action shows, movies, cartoons, whatever, but it always seems to be appear on the printed page. I mean usually people say uhhh or um... but never have I seen anyone say 'er', like ever.


On another note, I've never seen anyone, regardless of intelligence say duh unless it was in a sarcastic manner.