I think he has emotional problems.

He needed to go to the toilet badly,i think.He's in deep concentration,trying not to crap his pants.I know that feeling,its terrible...

he suffers from chronic poker face.

He is sad because his wife will get the half :(

He's calculating how much of his winnings he'll have to give to the IRS, hence, the "OHHHHHHHHHHHHHH FUUUUUUUUUUCK!!!!!"
look on his face.

.

what reaction ? ? ?