Fergie Sings on Nick at Nite's 'Glenn Martin, DDS'

Fergie gets animated in an episode of Nick at Nite’s Glenn Martin, DDS airing on Wednesday (December 22) at 10:30/9:30c!

Here’s the synopsis of Fergie‘s ep:

The Martins sign up to volunteer while in Tennessee (the Volunteer State), but when Glenn fails the volunteer fireman test and sees Jackie pass on her first run, he joins the Citizen’s Field Brigade and becomes part of a militia on the verge of war. Meanwhile, the kids help at a hospital and Courtney and Wendy are inspired after meeting a Mary Poppins-like patient named Maria Peppins (Fergie). Rob Riggle (Funny or Die Presents…), DJ Qualls (Road Trip) and Patton Oswalt (Ratatouille) also guest star.

Check out Fergie (as Maria Peppins) singing a song about volunteering below…