Infinite Geometric Progression

If you were trying to explain infinity to a six year old boy, you might say that it's the biggest number that goes on forever.  You might say things like you love him infinity much. You could talk about walking around a circle or explaining how small things can be or how far space goes.  Then you might hear him explain it back to you by expounding that if you farted two butts and those butts farted their own butts and those butts farted their own butts and it just kept going you would have infinity butt farts.