Seen the video -- what's the song?

Question

It's a recent video -- there's a girl who puts a laxitive in some guys drink, and at the end of the video he's running into the bathroom. I'd seen this video the other night, and I can't remember the name of the artist or the song. Please don't copy & paste lyrics -- no brownie points will be awarded to you. Best answer will be awarded to the first person to provide the correct artist name & song title.

Answer 1

The song is called "Smile" By Lily Allen