The enigma behind Leap Year birthdays

You know, I've always wondered about the dynamics of Leap Year birthdays, because it's a very unique scenario. Your day of birth essentially lives in hibernation, coming out only once every four years before retreating again for another four years. It's almost like a solar eclipse—appearing in a flash and then disappearing for eons.

Which leaves me to wonder, how do people whose birthday falls on February 29 celebrate? Do they just have a faux birthday on February 28/ March 1? Further to that, how do they calculate their age? Do they only count the number of actual birthdays they've marked? (Like if someone was born on February 29, 1960, does that person turn 48 . . . or 12?)

Kinda makes me glad I was born on Friday the 13th!