[Nobita's actually stopped moving when he freaked out, so his feet might actually be a little stuck. A bit of tugging, and they come free-minus his shoes. It also sends him falling on his butt.]

Oh no! I really liked those shoes... [He tries to get up, the sewage shifting beneath him, making him stumble again.] Whoa! It's easier for you! You've got more legs! [A brief flash of resentment makes the air turn even more sour.]