Same to You, Lady!

So my wife and I are at Kroger, a food chain here in NC, for our weekly  shopping.  When we get to checkout, we see the only open lane is the express  lane, and there's about six carts in line.
 I go to the self-checkout area and tell the  employee there that the only open lane is Express.  So she says, "OK, I'll call  for someone."  A moment later, I hear the announcement for someone to come up to  checkout.
 Another moment later, I see an employee walk to a  lane and she says, "I can help someone here."  I navigate our buggy into the  lane and start unloading.  While doing so, some nutcase lady comes up to me and  starts laying into me about taking that lane.  She said when a new lane opens,  they usually take the next in line, "not the first one who can run over there  and jump in the lane!"
 I said, "Excuse me, but were it not for me asking,  this lane wouldn't have even been opened."  She continues, "Some gentleman YOU  are!  Blah, blah, blah.  I can tell YOU'RE not from The South!"
 I said, "How can you tell?  Because I don't have a  bug up my butt?"
 Well, actually I don't think that last part came  out out loud, but I kinda wish it had.
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