It is barely hearing something from either side of the head and getting the feeling that you caught it in the corner of your ear.
As in i just barely heard that out of the Corner of my ear.
The Reverse turtle is tucking the junk under the ball sack leaving only the head sticking out resembling a turtle in its shell. Also on The Waiting scale it is worth 3 kicks.
Oh man he got me with the reverse turtle and then kicked me 3 times!!