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You're so hungover that when a bird is flying towards you, you see its shadow on the ground and think it's actually a rock being thrown at you. Also applies to other flying species like butterflies.
Hungover dude: "OMG did you see who threw that rock at me?"

Hungover friend: "Don't worry man I felt it too, it was just a rock bird."
by Hairy chesto August 03, 2009

Words related to rock bird

eagle flying insecurity paranoia stone