Maybe he means “she was born on February 29, so she’s actually 68-71”. And she could stand, while all the other girls were in wheelchairs.
On the Wings “Venus and Mars” album, the song “Magneto and Titanium Man” discusses a foursome of apparent superheroes, including the narrator, who catch a loved one of the narrator in the act of robbing a bank, whereupon the narrator decides to abandon the superhero cohort and side with the “five-star criminal.”
It’s pretty easy to interpret this song as a metaphor for the Beatles’ break-up due to Yoko Ono, with the (unnamed) narrator being John, the title heroes being George and Paul (in no obvious order) and the fourth guy ("…and the Crimson Dynamo came along for the ride") Ringo.
[Wikipedia entry for Magneto and Titanium Man. I’ve never heard the song, and now I don’t think I ever want to, because it can’t top this absurd stream-of-consciousness entry.](Wikipedia article for Magneto and Titanium Man. I’ve never heard the song, and now I don’t think I ever want to, because it can’t top this absurd stream-of-consciousness entry.)
I meant to add that the lyrics contain the phrase “Oh no, this can’t be so” in support of this interpretation, which as far as I know is my own.
I read that too – it’s actually an excellently silly song.