When a woman flashes her breasts by pulling them up and out of the neckline of her shirt and lets them flop onto her chest against the fabric of her shirt.
Jane was at Mardi Gras last month and she was asked to flash her tits for beads. She chose to tit flop them instead of pulling up her her shirt and it avoided her having to show her belly.
A woman who offers little else upon first glance than a nice pair of tits and a slim body. The woman usually appears a bit ditzy, superficial, or generally uninteresting except in the physical dimensions.
Eye candy for breast-focused men.
"Hey, let's get out of here. All I see are a bunch of tit sticks with their gin and tonics. I'm looking for women of substance."