"I thought it wuz chuz" lol
When I was in the Marines, I studied a lot of other peoples accents and speech patterns. (Not much else to do sometimes) Anyway, I thought that I had no recognizable accent at all until one day a guy point it out to me that I use "sumpum like that" (not sure how to spell it). Since then, I try to avoid it and I've become aware of a lot of other regional dialects.
(as if I don't have more important things to dwell on)