In the episode "Hooray for Holly Kongo-Bongo", when Donkey Kong asks for tips from Candy Kong on how to act like a villain, she sings "Be Bad!".
CANDY:
Think about the meanest guy that you know
Is he cruel, is he bad, does he talk real slow?
DK:
It's the villain that I wanna play
I don't know if I can be that way
If I gotta be bad, I gotta find a way!
DK & CANDY:
Talk bad, look bad, be bad!
Walk bad, think bad, be bad!
CANDY:
The villain in your mind has to be unkind!
DK & CANDY:
If you wanna be good, you gotta be bad!
Lies and fibs, cheats and steals
My treacherous villainy makes me squeal!
I never tip, I butt in line
I never clean the dishes and it suits me fine
I'm so pleased, I'm such a sleaze
This bad guy thing's a breeze
DK:
Gonna steal, gonna be untrue
I'm black-hearted through and through
If I wanna be bad, I gotta walk in his shoes
ALL:
Talk bad, look bad, be bad!
Walk bad, think bad, be bad!
DK:
The villain in my mind is gonna be unkind!
If I wanna be good, I gotta
ALL:
Be bad!