In a supermarket, all the people go crazy and start doing silly things, like throwing stuff around or food fighting.
Then, one blonde woman who is apathetically standing at the cashier register, gets pied in the face (see the pic).

Does anyone know from which commercial is this?

I believe it's a 2011 commercial for bing search engine. It's about search overload. One woman gets pied by another woman. I mean, I'm not a biologist but I know what a woman is.

Yes, that's it - one of Bing's "search overload syndrome" commercials.

Thanks!