noun: ancient dinosaur that came from the ice age. has long neck and scales for skin. also has four fins and an oval body. it propells through the water like a penquin.
person one: woah man! did you see that giant swimming dinosaur?!
person two: i did dude! but that's no dinosaur! it's a plesiosaur! the plesiosaur ogopogo of canada's Lake Okanagan.
person one: you jeefe, shut up.