A rhetorical question of course given that people on Youtube also seem to find the advert very strange indeed.
The fact that someone at Coca Cola (who own Oasis) thought "Hang on, a girl having sex with a cactus ? That sounds great. Oh, and lets make the cactus hate water !"
I have spoken to other people about this advert and everyone else seems to find the whole Oasis Cactus kid stuff really very, very odd.