The Smurfs 3D attempts to tackle the ultimate question: what DO you do when cuddly blue money-spinners get lodged in your toilet? It turns out the answer is: get self-referential, mother SMURFERS. Harmless, silly fun along the lines of Elf and Enchanted, Smurfs 3D does a fair job of appealing to humans big and small – but it does feel like everyone’s aware that this is fluff and nothing more. Nothing smurf? Smurfing more? You’ll pick it up.