(Similar to McBender or McABender.)
1. The portmanteau couple name for the James McAvoy and Michael Fassbender RPS pairing.
2. Fandom involving the two actors James McAvoy and Michael Fassbender.
3. A good example of bromance that has spread like a wildfire after the newest X-Men-movie "X-Men First Class" where the two actors played Professor X(McAvoy) and Magneto(Fassbender) together.
4. Also claimed to be a lifestyle cultivated by fangirls of the McBender Bromance.
TumblrFangirl 1: OMG I just saw "X-Men FC" for the third time!! FassAvoy never gets old!!!<333
TumblrFangirl 2: Keep calm and ship FassAvoy/McBender!<3