It's impossible not to laugh at the expression on Shikamaru's face, so Chouji does. "You probably shouldn't, if you're going to look like that when you hand it to me."

Speaking of which... "And besides, I still don't even know what this year's gift is. It's much too soon for next year." His eyes narrow the slightest bit, smile shifting from amusement to anticipation. He has no guesses, but Shikamaru has teased him him about gifts and wishlists more than once tonight; Chouji is looking forward to the surprise.