I’ve Got a Gal in Kalamazoo

“(I’ve Got a Gal in) Kalamazoo” is a #1 popular song recorded by Glenn Miller and His Orchestra in 1942. It was written by Mack Gordon and Harry Warren and published in 1942.-Wikipedia
“A, B, C, D, E, F, G, H
I got a gal in Kalamazoo
Don’t want to boast but I know she’s the toast of Kalamazoo…Oh, what a gal, a real pipperoo
I’ll make my bid for that freckle-faced kid I’m hurryin’ to”

A piperoo is either a very pleasing person or a kangaroo playing bagpipes.