Angry Birds Seasons is a sort of additional Angry Birds game which is periodically updated with season-appropriate content. This month it was Valentines' day. From the games losing screen:
"Bing and Decide". This is apparently one of Microsoft's thousands of Bing-oriented ad slogans. When you select it, you get:
Ooh, cheeky! Very cheeky indeed! Also, I hadn't realised that Bing's mobile interface was quite so hideous.
Just to give you an idea of the sort of game this is, here's the ending screen:
Look at them, shamefully aroused by the just-completed porcine genocide, cloacae at the ready...
Microsoft, when your PR people told you that sex sells, I don't think that they meant sociopathic bird sex.