Quote Investigator: The earliest evidence located by QI was in a 1958 book about a New York theatre producer titled “The Nine Lives of Michael Todd” by Art Cohn. In 1944 the play “Catherine Was Great” which was produced by Todd and starred Mae West opened on Broadway. The author Cohn stated that West improvised the humorous line of dialog when she was interacting with her fellow star Gene Barry: 1
Barry, playing Lieutenant Bunin, was unaccustomed to carrying a sword, and in the second act, during an embrace, his scabbard came between him and his Empress.
A covert smile stole over Mae’s face. “Lieutenant,” she ad-libbed with a Westian leer, “is that your sword or are you just glad to see me?”
I say, if you aren't packing a least a colt, don't bother stoppin' by! :) :)