Hey E. - My daughter will be 10 months next week, and I'm going through the same thing with her. She's my third, and they've all gone through this phase. I try to give her a shoe/strap/toy to play with, but that only helps for a second until she tosses it! Since I've never found a "cure" I just stayed consistent. I talk to them, do the "Blllth" thing with my tongue, make faces and, as firmly as I can, hold them down and be as quick as possible. I try not to make it a game.
Sorry I'm no help, but I wanted to let you know that in my experience it is just a phase. When he's just a bit older you can sing with him, ask him to point to his head, eyes, ears, etc. If you want to you can buy the tiniest Easy Ups, that way you can have your baby step out of and into them, and if it's a poopy you can tear the sides apart and lay him down, too. I use cloth, so that's not an option for me!!
Blessings,
J.