For your daughter, have you changed her bottles or gone from nursing to bottles recently? When I weaned my son from nursing there were a few bottles that he just couldn't latch onto afterwards. I only had a few of them but they were those really wide bottles where the base of the nipples are big. He just couldn't latch on to them but he had no problems with the narrow bottles. Or it could be the flow of the nipples are too slow for her if she is having a hard time getting anything out. And it sounds like she found her tounge too which will make anything you put in her mouth a play toy for her to push out!!
For your son, I have the same problem with my son. I swear he comes by it naturaly cause his dad is the same way. I just use my pinky with a wet wash cloth to clean out his ears in the tub or I just run a q-tip on the outside of his ears to get all the gunk. I've asked his Ped about it and he said it is normal so.....guess I just have to deal with it!!
S.