Okay, I'm throwing myself to the mercy of the female jellies with this, but do you ladies sometimes flash your breasts to guys just to toy with us?

I was ordering a sub at an area shop, and this really nice looking young lady comes up to take my order. She’s not wearing a lot, short shorts and a skimpy tank top. I asked my S/O what she would like and then place my order. The young lady leans over the counter to write the order down, looks up at me with an evil grin, and leans over further. Good god I had to turn away, everything was on display and then some. And she still had the grin. I think she knew she was messing with me big time. Am I way off base or do some women do this.