Frodo: "Oh my..."
Stone Giant(only his leg is showing): "Oh! I almost stepped on you. So Sorry."
Frodo:
OR
Frodo: "Wow. How did I survive falling from way up there."
OR
Momma Baggins: "Frodo, come in for supper, dear!"
Frodo(to self): "Crap! I just ripped a hole in my pants!"
OR
Frodo has no idea what's going on.