The look Clint gives her is slightly sardonic, though he's smiling. He knows she doesn't know enough about wind currents to pin down where he is from them, but c'mon, Nat.

The answer is: not really.

Instead, he slips one hand behind her back, where it curves away slightly from the tree, and the other under her knees, snagging her onto his lap.

(Yes, he gives her enough forewarning to hopefully not get smacked in the face with a book.)