You're Getting Old

"You're Getting Old" is the seventh episode of Season 15, and the 211th overall episode of South Park. It originally aired on June 8th, 2011. (1)

Synopsis
After Stan celebrates his 10th birthday, he begins to see everything differently. The other boys think he's become a major buzzkill and start to avoid him. When Stan and Kyle have a major blowup, the fabric of South Park begins to unravel.