A male who pulls the same kinds of bullshit antics as a mean, immature female yet doesn't realize what they are doing is overly feminine. Instead they think its clever and do not understand or realize it is conduct unworthy of an actual man. Forming exclusionary social cliques, passive aggressive attitude and routine back-handed bitch behavior are indicators that a guy may indeed be a male cunt.
"Dude, why is John always secretly talking trash on facebook about Steve and going out of his way to make sure nobody invites him to anything? Did Steve do something wrong?"
"Yeah, something really really small like two years ago. John is a total male cunt for pulling that kind of a high school girl stunt. He is almost 30 years old! Why can't he get over small-time slights like a real man?"