As you progress, you'll find a bunch of Piranha's in the water in some stages. Try entering the water and getting out as fast as you can without getting hit. It takes a couple tries, good luck! --- PS3/Vita PSN ID: MrCiel Level: 12 3DS FC: 2062.9168.6736 Username: Ciel
You might get this while going for speed trophies, the ice levels have the pirahna ponds, what I just did was in one of the levels, sprint into the water then jump out ASAP, it's not too bad to get. --- "Nothing is true, everything is permitted"