The reaction one gets after seeing a ghost, but applied to someone after hearing unexpected news.
Can be used with SHOOT, SHOOTING or SHOT depending on whether you're being passive or present tense.
Brother: It's true! Mom gave me $20 last week and he only gave me $5. WTF!?
Sister: I know, right!? Then, he gets all sympathetic and said how much he loves me and would give me however much I wanted right then. That's when I shot the ghost and asked for $500! hahahha
Brother: HAHAH! DAMN! I bet he thought you were trippin.