The singer recently returned to her Californian high school to perform for students when she spotted the high school crush who refused to date her.
"Is that Shane Lopes?" Perry asked the crowd. "You were the most popular kid in my class. But you never wanted to date me... Oh yeah, you really chose right, honey. What's up?"
She then started singing 'You're So Gay'.
Lopes, who was the high school quarterback, told media: "I turned red, I mean there's only so much I can say because I didn't have the microphone so I couldn't form a rebuttal or talk any crap back."
Perry obviously didn't remain unpopular during her school days, revealing she finally "made it" when she got the attention of an older classmate.
"I went to homecoming with a senior and that made me feel really cool 'cause when you catch a senior for homecoming or for prom or whatever it is... you made it. So I made it back then, even."
Watch the burn right here...