What Leonardo shouted at Shredder when Shredder claimed that Splinter was dead.
Raphael: Where's Splinter?
Shredder: Ah, the rat. So it has a name. It had a name.
Leonardo: You lie!
jorgorthebarbarian: "You lie!" is what Michaelangelo shouted at Shredder when he claimed that Splinter was dead.
Me: You lie!