A phrase commonly used by the fandom side of the social media website tumblr to describe a reaction of an inhuman noise (that sounds like a pterodactyl screech) one has made after they see something that pleases them greatly and instantly excites them.
Synonymous with 'Gay Panic', defined as the high-pitched voice-cracking screech a gay produces when they're in a fit of chaotic gay panic. Usually when their gay beliefs (such as a gay believing they're top, twink, daddy etc.) are being questioned. Or when someone attractive tells them something nice and/or flirty.
A hoe you call best friend: "When Craig picked you up after you tripped like a drunk bitch and asked you if you were fine, I swear I saw you blush. Are you a bottom?"
You: "*gay screech* I SWEAR I'M A TOP, A TOP I SAY"
When you're scratching someones back, but softly. It's a mix of scratching and brushing your fingers on someone. Usually done while relaxing, can also work on other body parts like the arms. (NOT SEXUAL)
Scruch can also mean brushing your fingers through someones hair.