Commonly mispronounced words and phrases that disturb you.

   yall talking about me?

Living in Pittsburgh, this question is practically unfair.  It's like the whole city was taught to speak by Norm Crosby.  Among my favorites:

SupposeIBLY (for supposedly). 

AcrossT - (as in "acrosst the street")

Indeed, I was watching an episode of City Confidential a few weeks back. It featured a homicide that took place in Pittsburgh (Ross Township, actually).  The lead officer on the case said that the suspect was "cool, calm and collective" during questioning.  Although that show was seven years old, I'm sure no one has ever corrected him. 

Finally, in the Burgh, the past tense of "saw" is always "seen,"  as in "I seen this new Pontiac last week, acrosst the street from where they're supposibly putting the new McDonalds."   

Can I "axe" you a question.   How trailer trash.

definately wierd. I have heard even well educated people from the south of all races with that error in basic grammer

you forgot the classic ending to a statement in Pittsburgh "In At" AND  the burgher version of You All, "Youens" as in "Are Youens going to the Steelers game in at?"

I'm ok with the regional quirks of Pittsburghese.  As you note, folks here do say things like "yinz" (for "you") and 'en'at (for "and that," though it's used almost compulsively - sort of like the ubiquitious "innit" [for "isn't it"] you'll hear in Manchester, UK).  Pittsburghers also frequently drop the infinitive.  For example, my secretary will tell me that something "needs faxed" or "needs filed."  I read a column by William Safire that said this was grammatically OK, though it sure sounds funny.  Then there are words that seem only to exsit in Pittsburgh - "jumbo" (bologna), "gum bands" (rubber bands), "nebby"  (nosey?  I'm not even sure), "read-up"('cleaned/tidied).  Those are all fine.  I like Pittsburgh's quirkiness.  There is, however, no excuse for "supposebly" no matter where you're from. 

And, Cannon, note that Pittsburgh IS spelled Pittsburg in Kansas and California.  Why?  I have no idea.