Example from about twenty minutes ago:
"I'm looking for Ham Hocks."
"Sorry, ma'am, but we're sold out right now."
"YOU NEVER HAVE THIS ITEM."
"We had it come in just last week ma'am, but they sell fast during the first of the month."
"DON'T LIE TO ME, I'VE BEEN COMING IN FOR SEVEN MONTHS AND YOU NEVER HAVE THEM."
"We had some come in last week, and some came in two weeks ago, and I put them out on the floor, ma'am. "
"STOP LYING TO ME! *Ragequits*"
Because, y'know, it's my life's mission to lie to you and inconvenience your shopping experience."