(1) The zone you enter or feeling you get when the alcohol starts kicking in. When you have the confidence to walk with a bounce but maintain ability to do so. The point where your 'dance' and 'game' levels reach equilibrium. And you can have fun while maintaining your
swag. Beyond
tipsy but before drunk.
(2) It may also refer to a couple
flirting or a bond/connection between them. Or when a man is making successful moves on a lady.