Childish slang for penis. (Also used by devout religious types who are afraid to say anything remotely "naughty.")
I've always tried to teach my kids the correct words for things. I've taught them a penis should be a penis, although personally I prefer "wing wang" or schlong." Less threatening. -- Kathie Lee Gifford.
Similar to "Ying Yang". Pertaining to a balance between two friends, one African American and the other Caucasian. The "Wing" is currently unclear in its meaning, while the Wang represents the well endowed African American.