The act of going down on a woman with a yeast infection. The wings system was supposedly started by the wings badges/patches worn by Hells Angels indicating the various sex acts they have performed. Also see red wings, brown wings, or black wings.
"I earned my white wings from that hag in the bar last night"
(knowingly or unknowingly) eating a girl out who has a yeast infection. Based from the term "red wings" which involves giving oral sex to a girl during her menstration cycle.
My friend went down on his heavy set girlfriend and later realized she had a yeast infection after discovering chunks of white matter on his lip. He was an unknowing white wings recipient.