A Sea Flap Flap is basically a stingray, internet people call them such name for the sound it makes "flap flap" and because of the origin in which it was found in, the "sea". Therefor its rightful name is sea flap flap
him: its a bird,
Me: no,

him: its a plane,

Me: um no,
Me: its in the water how can it be either,
Him: ....
Him: its Flapping like crazy
Me: its called a stin..
Him: a fuckin sea flap flap
Me: -__- sure its a sea flap flap
by FUNDCPLUS January 07, 2016
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A Majestic Sea Animal, Also referred to as a "Sting Ray", but on the internet it is referred to as a Majestic Sea Flap Flap
Did you see that Sea Flap Flap over there? We just missed it!
by VaginaEat2016 February 22, 2016
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The name you call a stingray when you dont know the exact name on moment. Could also be known as "sea pancake"
by Carry.on.my.wayward.son June 27, 2017
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In Short, A stingray. A very majestic swimmy creature who glides on majestic flappy wings.
1: Dude, look at that sea flap flap.
2: So majestic.
3: Such Flap Flap. Wow.

Danger Floof Nope Rope Stingray
by MyNameJuan April 17, 2017
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