An injury, similar to tennis elbow, received from performing too much fellatio. Common among cum dumpsters and other similarly whorish individuals.
Jen: *cough* Aww man I think I got wang lung.
Amelia: How did that happen?
Jen: I sucked like twenty dicks.
Amelia: How did that happen?
Jen: I sucked like twenty dicks.
by velveteen faggot November 14, 2012