How should I feel when he calls me "lady"? Is that normal behavior?

Im 24 and this guy I have been hanging out with calls me "lady" sometimes. I texted him hey earlier and he replied with "howdy lady" and then he asked me once "what are you into lady?" Bottom line, he has called me lady like 3 times but he has also called me sexy and babe once. Ladies, how do you feel when a guy calls you that and guys, do you normally call a girl "lady"?
How should I feel when he calls me "lady"? Is that normal behavior?
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