Leprechauns Aren't Real?

When Donnie switched his gaze away from Mikey's pity party to look at Raph, he noticed something uncomfortable flicker in Raph's eyes, something Mikey entirely missed. That look meant Raphael did something he wasn't supposed to.
"Uh... have ya checked the ground? Maybe it fell off."
"Yes!"
"Did ya check behind yer nightstand?"
"Yes!"
"Under yer bed?"
"Yes! Yes! Yes! It's gone!"
"Then it sounds like the leprechauns took it