I'm The Grumpy Old Troll -Dora The Explorer I'm the grumpy old troll who lives under the bridge Hey I'm the grumpy old troll who lives under the bridge Who's there If you wanna come over all you have to do is this All you have to do is this I'm the grumpy old troll who lives under the bridge Hey I'm the grumpy old troll who lives under the bridge Who's there If you wanna come over all you have to do is this All you have to do is this Solve my riddle