Different song with the same title:

THE BUMPER STICKER SONG
As sung by Jeff Steinberg on "The Glove" (2006)

Some folks got stickers on their car like "God Squad" and "I Found It."
Some folks' necks is all rubbed sore from the crosses they hang 'round it.
Their Sunday-school-attendance pins hang right down to their knees,
But by their crabby faces, you'd think Christ was a disease.

Well, don't put that sticker on your car if you can't live up to it.
Don't wear that button sayin' "Praise the Lord" if you ain't gonna do it.
Well, I sing this song a-hopin' that you all will realize
If you ain't livin' what you preach, then please don't advertise.

Some folks got little statues on the dashboards of their cars.
Some give apostolic names to their twelve-string guitars.
They put their "Jesus First" rings right next to their Spirit doves,
But pizza and a midday squeeze(?) are the only things they love.

Some folks got t-shirts with a finger pointin' at their chins.
They give great testimonies of all their former sins.
Their "Please-Be-Patient-with-Me,-God's-Not-Finished-with-Me" buttons hangin' down their left side.
Well, take away their image strength(?) and they got nowhere to hide.

So don't put that sticker on your car if you can't live up to it.
Don't wear that button sayin' "Praise the Lord" if you ain't gonna do it.
Well, I sing this song a-hopin' that you all will realize
If you ain't livin' what you preach, then please don't advertise.
Yes, if you ain't livin' what you preach, then please don't advertise.