Tyler is playing with a shower squeegee and blocks. He carries it around and acts like it is a bat most of the time.
He also walks around and wipes the floors and makes noises like it is screeching as he is wiping it.
Dad is now building him a tower with blocks so that he can knock it down.
After he knocks it down he says, "Man." Translation is - Awe man.
All he says is 'Man' and then we laugh. I think he is picking up on the fact that we find him pretty funny.
This whole thing is especially funny, for some reason, since he is holding a shower squeegee.