1)Batwing - The end product of when you pull your scrotum taught, so that it is flat and veiny... like a bat wing!
2)Meaty Bat Wing and Spined Bat Wing also found in WoW.
Paul: (looks) "Zomg... ewww the Batwing.. I can't believe you gave me the batwing! It's soooo veiny!!"
Gary: *Kicks Paul in the ass, mercilessly ridiculing his sexual nature*
Term used in the movie "Waiting" which deserves three kicks if caught looking at one.
"haha, gotcha my friend. now that three kicks you raging cock-smoker"
Robin: Yeah I know, I'm beginning to have batwings.
Batman: That was very unnecessary.