When you need to complete Larry's tongue slide, there are some short cuts you can follow. When you first begin to slide down the hill, you can bounce of a trampoline to the right. This will take you to an upper tongue slide hill. Once you get off it, look for another trampoline. It will take you to another place. From there, just follow the road.
When you are tongue sliding on the last level, you must bounce on the trampolines. When you are transported to another path, hit the red button. A huge snowball will destroy the enemies in the front of you. Look carefully to see an opening in the cavern. Jump into it, then around the bend, jump onto the exit hole for a shortcut.