I agree. The only place I want to see 'orbs' is in reference to an Orb of Thessula. Which means that outside of Buffyfic, it should never be used.

Globes for breasts is worse, though. I've read that and thought "Oh my God, if you're a female writer, peek inside your bra. If you're a male, clearly you've never had sex with a woman, but you could at least buy a magazine to educate yourself."