There Goes My Grammar

Uh oh.  I did it.  Yesterday, in the midst of a perfectly normal conversation, I caught myself saying, “I reckon.”  I didn’t mean to.  It just slipped out.  As soon as I said it, I caught myself and looked up, just waiting for my coworker to call me out. But, of course, she didn’t, as this is nothing out of the ordinary for her.  So, the conversation continued, without any acknowledgement of my error.  Even still, I felt silly, especially considering I give all of my Aussie friends such a hard time for the blatant overuse of this term.  I’m not joking, every sentence either starts or ends with “I reckon.”  It can be maddening.  “I reckon” has become my least favorite of all Aussie slang.  It’s like a tick in their language that just won’t go away.  And there I was, just dropping it into the conversation like it was a normal part of my vernacular.  To make matters worse, I’ve caught myself saying, “Good on you!” a couple of times.  Ack!  What’s happening to me?  Am I losing all sense of grammatical propriety?  The next thing I know, I’ll be saying things like “fair dinkum” and “Bob’s your Uncle.”  I shudder just thinking about it.  I need help.  But, considering I’m surrounded by Aussies and only have access to a handful of American television reruns, I might be in serious trouble.