• Wikisimpsons needs more Featured Article, Picture, Quote, Episode and Comprehensive article nominations!
  • Wikisimpsons has a Discord server! Click here for your invite! Join to talk about the wiki, Simpsons and Tapped Out news, or just to talk to other users.
  • Make an account! It's easy, free, and your work on the wiki can be attributed to you.

Plastic Underwear

Wikisimpsons - The Simpsons Wiki
500 Easy Pieces
Plastic Underwear
Plastic Underwear
BF Plastic Underwear.jpg
Commercial Information
Topic: Butterfinger
Original airdate: December 31, 1999
Length: 15 seconds

Plastic Underwear was the Butterfinger commercial that originally aired on December 31, 1999.


Lisa bites into her Butterfinger, awakening a sleeping Grampa. When he attempts to go back to sleep, the biting noise happens again, though this time it's not Lisa but Grampa's plastic underwear. Once Grampa is back sleeping Lisa once again bites her Butterfinger.