look up any word, like eiffel tower:
 
1.
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
 
2.
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