With his infamously unhappy disposition, you would think Grumpy Cat would be the last person -- er, feline -- to take prom advice from, right?
Though the hilarious Internet meme usually looks less than thrilled, Grumpy Cat has a serious message for high schoolers in the Pittsburgh area: don't drink at prom.
According to Time.com, the billboard was designed by high school junior JT DeMarco, a winner of a contest to promote an alcohol-free prom.
"[Grumpy Cat] is something that’s really popular and a lot of kids see, so they kind of can relate to it,” DeMarco told WTAE.com.
Grumpy Cat, we endorse your message.
Do you think JT's billboard design will help curb prom partying? Tell us in the comments or tweet at @HuffPostTeen.