Tenessee Tangler
When you and your brother(s) (one on bottom, and one on top) members get tangled together while "d'ping" your sister. Usually the result of both units popping out at the same time and getting twisted together when they both miss their mark going back in and get "tangled together."
Oh man, me and my brother members really hurt after banging our sister and getting the ol' tenessee tangler halfway into it!