Tits McGee started out meaning a woman with awesome,
perky, or
voluptuous breasts.
Later on, it became an adjective meaning anything that’s exceptionally good. It can be used with or without 'McGee' or "
Magee" on the end.
Dude 1: "Damn, the paint job on that
souped-up Silverado is The Tits McGee.”
Dude 2: "Yeah, cool paint job. That’s definitely tits. But have you seen the driver? She's the Real Tits McGee."
Dude 1: "Oh, snap. You're right. I bet she's wearing a
padded bra, though."
Dude 2: "No, they're real. I know that girl. She's a legit Tits McGee."