Boogers From a Five-Year Old

There's a company selling boogers by the road.
It's run by a bunch of four and five-year olds.
And all of their customers are under eight,
Except for a few teen-agers,
And all of their customers think it's great
To buy their boogers from a five-year-old.

They got some brown ones, green ones,
Kind of in-between ones,
Yellow ones, that's for sure.
And they used to have some purple ones,
But that kid's momma called the doctor
And got him cured!

There's a company selling boogers by the road.
It's run by a bunch of four and five-year olds.
And all of their customers are under eight,
Except for a few teen-agers,
And all of their customers think it's great
To buy their boogers from a five-year-old.

Hey: This song is inspired(?) by a real sign on Windfern Road in Houston-
-- BGRS -- What would ANY creative person think they sold?