Last Friday Night (T.G.I.F.)

Last Friday Night (T.G.I.F.) opens with Perry as a nerdy teenager who wakes up after a house party, surrounded by passed-out partygoers. After she finds pictures of herself on the internet, she recalls what happened when she went over to the house party to complain about the loud music. The host, Rebecca Black, invites her in and helps Perry fit in with a makeover. Perry joins in the party as everyone dances. She and Rebecca play the video game Just Dance 2. The entire party ends up moving to Perry's house, where she throws up after drinking too much and she passes out. The video ends the next morning when her parents confront her about the state of the house. The end credits feature various deleted lines, bloopers, and extra scenes from the party.

In the video, Perry stars as Kathy Beth Terry. Along with Rebecca Black, cameos include Kevin McHale as nerdy Everett McDonald, Darren Criss as Aaron Christopherson who tells congratulates Perry on having the "best party ever", Richie Nuzzolese as Steve Johnson ("The Jock"), an attractive football player, Kenny G, and Hanson who act as the house band and Corey Feldman and Debbie Gibson as Kathy's parents, Kirk and Tiffany Terry.