Spook-spasm
The involuntary spasm your body and/or face experiences, when you are suddenly spooked or unpleasantly surprised.
"That movie gave me several spook-spasms!"
"Oh my god, you look so ridiculous when your face spook-spasms!"
"You can't use this photo of me! I am having the craziest spook-spasm in it!
"Oh my god, you look so ridiculous when your face spook-spasms!"
"You can't use this photo of me! I am having the craziest spook-spasm in it!