If a high ball was dropping into the goal area in a GAA match, this is a shout from the big man on the team letting other weaker players know he is about to jump for it.
I will gladly pay you Tuesday if you will contribute to the cost of my next alcoholic beverage [usually all of the cost of it, and then they sit down next to you, happy days!]
A native of Cavan - an engaging yet economically circumspect people reputed to be skilled in the means of peeling an orange without displaying it to potentially interested third parties.