Big Flipper
(n.) A constellation of the imagination on ceilings with the bumpy paint. The larger paint blobs form the shape of a dolphin, more specifically, Flipper. This great fish can only be seen in the paint at a certain time of day when the shadow hits it just right.
"That one right there! I can see the Big Flipper"
"The big flipper?"
"Yea, like the dolphin"
"The big flipper?"
"Yea, like the dolphin"