This is a South Park version of Lady Gaga - Poker Face song. Also my sister's favorite one lol I had to listen to it almost every day then when I saw it even in South Park I rofled xD.
Eric Cartman feat. Kenny & Kyle - Poker Face REMIX (Music Video) HD

XD

 

The South Park "team" is actually going to put a downloadable MP3 of the original version from the episode on their site, if they can get the rights that is.

Loled