Said in response to someone saying thanks. Comes from a Joke where David Hasslehoff asks a Clerk to change his name to the Hoff... when the Clerk said Sure, No Hassle. Now instead of saying "No Hassle" people just say Hoff.
When a game of football or hurling is very close and its hard to decide who will win or else in discussion about a dodgy decision made by a referee..
This was heard comin from a Cork man in croke park...