Pterodactyl Cackle Share definition Flag Someone who has a high pitched laugh with the supersonic equivalent to that of a pterodactyl roar I was watching Grown-ups until aunt Betty had to fuck it up with her pterodactyl cackle Pterodactyl Cackle by ionsnake22 November 29, 2010 0 0 Get merch Get the Pterodactyl Cackle mug. Buy Now — $32.95 See more merch