Chris Pratt Anna Will Get Fat Pratt In No Time Flat

Chris Pratt says he's not as fit as you think, but the secret will soon be out because he may just go back to being fat Pratt.

We got Chris out at LAX Wednesday afternoon and he was super excited about "Guardians of the Galaxy 2." But he's also a little bummed about his favorite alcoholic drink that's not on the diet.

Chris then gives everyone, especially Anna Farris, a warning ... guess who's comin' back?