LotR sayings can fit any where!

[Elianna]

There's the ever fun: "That is no orc horn." when someone blows their nose.

"Keep up Gimli!" when your friends lag behind.

"You're late." is often appropriate (or in Elvish "Le abdoleth.")

"Flee! Flee for your lives!" is always fun, especially when there's no real reason to say it.

"What's taters precious, eh? What's taters?", or whatever food it is at the time.

"*wherever* *whoever you're with*, is it left of right?"

My prom dress had big princess sleeves, like Galadriel, so when my mommy was fixing the hem I would wave my arms around: "All shall love me and despair."

That's all I can thinkg of now. I'll be back though.