Mango Wang

Refers to a certain bitter/sour taste that a mango gives off. Can be used to describe any kind of fruit, not limited to mangoes.

Bob: What's wrong with your mango?
Tom: It tastes weird. Like bitter and sour at the same time.
Bob: Oh, they call that mango wang.
Tom: Now that you mention it, this mango does have some sort of wang to it.