streched out flaps on a vagina
"your tuna flaps are so big, you could cover your fist before you get to the hole".
by Rick69 September 26, 2007
1 more definition
The excess skin removed during Labia reduction surgery.
They used the Tuna Flap from Nicholes surgery for a skin graft on that burn victims hand. Now he has a permanent fistussy!!!
by firepual wulff October 27, 2009