The Del Rubio Triplets - These Boots Are Made for Walkin'

from Pee-wee's Playhouse (1989)

aside from the comedy stuff, they were legit performers back in the day:

The Del Rubio Triplets (1956)

and...the Musical ??? comedy stylings of Mrs. Miller, Singing??? the 1960s hit "Downtown."

Plug up yer eyes, lock up the pets and shut the windows, while listening to the horror show that is the voice of Mrs. Miller. Back in the 40s, the military studied her to see if her voice could be used as a weapon on the battlefield. After three generals passed out during the testing, they gave up and sent her on her way back to the nightclub circuit in semi-rural New Jersey.

Mrs. Miller - Downtown