Morgan Freeman, Jimmy Fallon Take Helium During Tonight Show Interview, Speak in Hilarious Voices

He did what? Jimmy Fallon persuaded acting legend Morgan Freeman to inhale helium prior to his Tonight Show interview on Thursday, July 24, and the results were amazing!

PHOTOS: Fallon's hilarious dance-offs

Cheeky show host Fallon presented the Lucy actor with a red balloon full of helium gas and gently persuaded the Oscar winner to partake in his little experiment, reenacting a prior helium moment from Freeman’s science documentary series Through the Wormhole.

"I do love your voice and everyone loves your voice," Fallon explained, "but I was wondering what your voice would sound like on helium. I'll do the same interview, I'll just do it on helium," he added, laughing.

Looking more than a little distressed, Freeman reluctantly took the helium balloon while Fallon got ready for the first question.

Taking a deep breath of the balloon's contents the 77-year-old actor fixed Fallon with a hard stare. "I really shouldn't be doing this," he squeaked. "It's very undignified."

Click the link above to watch the fantastically bizarre segment!