The next to the last verse of I Feel Like I'm Fixin' to Die Rag:

Come on, Wall Street, don't be slow,
Why, man, this is war A-Go-Go,
There's plenty good money to be made,
Supplying the army with tools of the trade,
Just hope and pray if they drop the Bomb,
They drop it on the Viet Cong!

For any young whippersnappers, a popular type of dance in the 60's was called go-go dancing, and a popular club was the Whiskey A-Go-Go.

Peace,

Roger in Baltimore