Sunday is no fun day for Louise on Bob’s Burgers, because Millie is all up in her grill.

Molly Shannon returns to the animated Fox comedy, which airs Feb. 15 at 9:30 p.m, in the role of Louise’s annoying “fremesis”—emphasis on the nemesis, not the friend. In the episode, Tina and Louise team up with Jimmy Junior and run his campaign for class president to prevent Millie from taking charge of the school. Check out this exclusive clip from the episode, in which Louise tries unsuccessfully to set up a Millie-free zone.