Experiments effect people in all kinds of ways, and some not at all.

[There's been a few games like this, apparently. The other players are smiling to themselves in the good luck they've been having, and when one suggests they raise the pot, it's met with a chorus of agreement from everyone but Shikamaru, who instead slouches in his seat reluctant.]

I dunno, guys. Maybe I should quit while I still have something.

[But he's not getting up, and so the other players try to convince him to stay. One tries to invite Nami into the game too, while they're at it.]