happy-go-lucky

Now, both these kids are your friends, but one is mature and responsible, taking his time to understand what he is doing and why he is doing it, and the other friend is a happy-go-lucky, who just lets things happen to him.

Then we have a new bunch growing up called "casuals". I looked that up in the dictionary and it means happy-go-luckies. The amount for these happy-go-luckies or casuals involves another 25 per cent of the total amount of the item, and we are asked to vote it without any details whatsoever.