Equated to letting off a firecracker in your closed fist as opposed to your open palm.
Doesn't actually mean anything to do with unhappiness and is seen by many as an indicator to the average Welsh person’s illiteracy for the English Language. This being somewhat of a paradox, as to most Welsh thought processes that the welsh invented the English Language. This paradox, that the Welsh, apparently founders of the language have no grasp of simple words, and what is, what isn't and what plainly doesn’t make sense words. This is also an indicator towards the average welsh intelligence, being only slightly above nil, good labour providers for the English some say, but now the English have taken that away, they all live in poverty, oh well!