Wow, Im so glad you asked this question. My 2 1/2 yo son does this too. He will ask when Daddys coming home and keep looking out the window. Then when Daddy pulls up he gets all excited. But as soon as Daddy opens the door to come in he turns off and starts acting aloof. As if he doesn't want anything to do with him. My DH has to be the one to make extra effort for hugs and kisses. Then my son will kind of want to play but he wants my DH to be the one to make the effort of coming to him. Sometimes he we get extra clingy to me. My son will also act up at dinner and trash his toys at this point. I tell my DH that hes been good all day and that he is just doing that for attn. DH is a little "NO" happy so I think my son gets mad and just does things to get a rise out of Daddy. Ive been trying to change things from "NO" to "lets do it this way instead"
I will show this to DH when he gets home so we can get some ideas on how to change this. Because this does end up rubbing off on me and I end up in a bad/snappy mood all of a sudden too. It might be what another mom said, that if Dad is all tense and still in work mode, then we feel that and we instantly go from smiles to frowns. Hmmm, interesting.
Sorry I didn't have any advice, but you are not alone.
Thanks again,
T. Lee