They are 13 and 22 Tinky and believe me they are really good kids most of the time. I get what you mean by saying they grow up fast as I cannot believe my eldest is 22, just cannot get my head around that he's a man but he will always be my boy.
They can be the kids from hell sometimes with each other especially when my eldest has his GF here and the wee one just simply annoys them or when the wee one has his friends around and it's the big ones turn to do the annoying but hey I wouldn't have it any other way