What is Sandy Mangina?
1.
The possible cause of male bitching.
Yo bro, you must have a sandy mangina -- give it a rinse!
Or, the term is implied when saying "Bro, give it a rinse!"
See
2.
A man who acts like a woman (see Sandy Vagina).
My friend, Sandy Mangina, is a man, but acts like a damn woman.
See