Season 5 Episode 9 The Ornithophobia Diffusion

Big Bang Theory Season 5 Episode 9 “The Ornithophobia Diffusion” Sneak Peek

Leonard and Penny try hanging out alone, and Sheldon must overcome his fear of birds - take a look at the sneak peek below for more insights on today's episode of The Big Bang Theory - “The Ornithophobia Diffusion”!