What qualifies as 'Perlish' ?

I mean, almost any computer language can result in great changes. They can be confusing and instigate fights, and yet generate works of art when placed in the right environment ... but I don't know if I'd qualify Yoko as particilarly 'Perlish'.

(And I'm not one to bother with the histoy of bands, and I've never really been into the Beatles, so I don't know the history well enough to take digs at the other people on the list)