Witty little saying that would make a great design!

So tell me if you don't just love the truth of this great saying!  I discovered it printed on a pillow at a local store here on the weekend and loved it so much that I think I just may do a design using the wording!  Summer fun continues on - the kids started more swim lessons and they are both water babies and far enough along they will be starting the diving portion already - wow, I think they just might be growing up a little too quickly.