Taken from the 2011 summer series "Friends With Benefits," a Mindbanger is the one significant other who gets into your head and takes over your mind in a way that all you care about is becoming like them and sustaining a clearly dysfunctional relationship. All you want to do is become whoever you think your boyfriend wants you to be, while losing yourself in the process.
A person who is mindbanged becomes completely disconnected with their family, friends, and previous lifestyle in pursuit of a pointless relationship.
"Oh...there goes Sarah, falling for her mindbanger, Joe"
"Yeah isn't he the guy who totally devastated her after she moved cross country for him instead of taking that big promotion?"
When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.