I was a sinner, a real bad kid

What thou shalt not, I shalt did

Neighbor's cat I tried to neuter

Took a wizz on the school computer

He took a wizz, oh yes he did

Now I've changed, you can't deny

So come on up...and testify!

Testify, testify, come on up and testify!

My hip's misbehavin'

(Testify!)

Got a nicotine cravin'

(Testify!)

There's a cramp in me Glavin'

(Testify, testify, testify!)

Testify, testify, come on up and testify

Bart's the boy of the hour, he's got the power

So raise your voice and don't be shy

Test-a, test-a

Test-i-fy!

Testify, testify, come on up and testify