Why is there a tarantula crawling up her breast?

Speaking of frickin' weird ads, while I was checking out the links to the previous story I was surfing - oh the horrors - condom less on the Internet so to speak, and I *gasp* actually saw the banner ads.

They are really scary. Trust me.

Take this gem for example. I need the concept here explained to me in small words. So pretty 3D gal is minding her own business when, uh-oh, a tarantula starts crawling up her breast. Look down girl! There's a giant hairy spider on your chest!"
You can never get these 3D rendered chicks to act right. Act scared girl. Come on girl, show me your scared face.

Nooo, that's your "I'm going to be sick" face. Scared face! No, No TOO MUCH! Sheeshs, you're no David Caruso take it down a notch.

Cut! Lets hire a real actor. What do you mean our budget is only 20 cans of Jolt cola and some rocket pop?