"Mountain trolls are slow and stupid, and you're so small they'd never see you!" Kili explained. "We'll be right behind you." Fili promised, nodding as he took the two bowls from the halfling, passing one to his brother. "If you run into any trouble, hoot twice like a barn owl and once like a brown owl." he instructed as the two dwarf twins gave Bilbo an insistent push towards the troll's campsite. When he turned around again they were nowhere to be seen. Now he had no choice but to go and try get the ponies back.