Kaley Cuoco & Johnny Galecki Get Kinky in 'Big Bang' Behind-The-Scenes Pic!

Well hello there Penny and Leonard! Kaley Cuoco took to Instagram the other day to share an extremely kinky pic of herself with co-star Johnny Galecki! In the episode of the Big Bang Theory the night before, Sheldon (Jim Parsons) had a nightmare where he sees Kaley and Johnny‘s characters dressed up in bondage gear