Pony Keg - meaning and translation?

Hi all, I need help with the following phrase:
Pony Keg
I haven't got a clue as to what it means or how to translate it. Here's the context - it's a country song about a married couple - the husband's going to "Jackson" to "mess around" while the wife waits for him, nonchalantly.

But they'll laugh at you in Jackson, and I'll be dancin' on a Pony Keg.
They'll lead you 'round town like a scalded hound,
With your tail tucked between your legs,
You're goin' to Jackson, you big-talkin' man.
And I'll be waitin' in Jackson, behind my Jaypan Fan

Any ideas?

Thanks!


Any Ideas?

Hola mvictoria:

Aquí te dejo la definición de "pony keg":

A "quarter barrel" or "pony keg" is about 7.5 US gallons, and will provide approximately 80 12 oz. glasses or beer mug of your favorite beer.

Pony kegs are half the normal sized beer keg and a quarter of a barrel.

Yo lo traduciría simplemente como un barril/barrilete.

Saludos,

Xóchitl

Pienso que es posible traducir este concepto de distintas formas, "barrel" es posible pero cuando se trata de contenedores de menor cantidad que 200 litros, se les llama "cuñetes", al menos eso tengo entendido ya que laboro con ciertos productos, de los cuales cualquiera que sea de menor cantidad de 200 litros se les denomina de esta manera.

Ojalá te sea de utilidad.

Ya tengo la idea, Bailando sobre un barril (gigante) de cerveza.
Gracias Xóchitl y TrikTurner, ahora me cierra el concepto!

Saludos a ambos