licking her hoo-hoo!
Seriously I think she does it for at least four hours a day. Or more. Every time I see her she's all legs in the air, going to town!!
DH says "well you would lick it too if you could reach yours" - ummm no I don't think so!

She's a fairly fastidious groomer so I don't think she has anything wrong with it, she just likes it cleaned. A lot!!