My favorite sport is football.  Do you like football? 
I like American style, gridiron football! I'm not a fan of rugby style football. Which do you prefer?
I like both.  Where did American football originate from? 
American football can be traced back to Britain in the mid-19th century. The rules were very similar!
What was the game called when it was in Britain? 
I'm not exactly sure but it's sometimes known as Gaelic football I think. 
Sounds a lot like Rugby.  They don't use pads correct? 
They wear very thin shoulder pads. Nothing like American football. For rugby, the pads can't be thicker than 1 cm!
Sounds like those players are more nimble and quicker on their feet. 
It certainly seems like it! Football has come so far since its inception as a peasant game, hasn't it?