"It's flipper, he's out of the water and boy is he %^*$%#%" : This one's a fav with band members... It is a Dolphin sound I make by fluttering my hand over the corner of my mouth. This one deserves a great example ... I visited Water World and while sitting in the audience watching a seal show,  I  gave out a loud flipper. One guy grabbed his kid and ran out of the aisle. He was totally freaked out; I could hear him telling everybody There's a Dolphin  loose up there...