a thuggish, non-skillful "sport", a cross between rubgy and football (or "soccer" as the yanks and mulchies call it) played mostly by the backward savages of Ireland (country folk), invented purely to be different from football, in an effort to make up some Irish culture that was separate from British culture. the rules .. well no one knows the rules really as they constantly change but essentially its something to do with manhandling opponents in an effort to kick the "liathroid" OVER a goal.
"the culchies are up in their droves today"
"yeh, theres a bog ball match on in croker"
(savage 1) "take your point boy, take your point"
(savage 2) "its great all the same to be up in the big smoke, did you see they had a toilet with running water in that pub? i love the bogball boy"