A pretentious prick who loves to talk about black and white movies, different coffees, wines from around the world etc. In other words a douche who talks wank. A self indulgent prick, who loves the sound of their own voice.
John: "listen to that prick at the end of the bar talking about how postmodern Damien Hirst is."
Joe: "Yeah, what a wankbag.
A man who dates women with the sole purpose of exploiting their time, energy, and labor while he sucks the joy and happiness from their lives.
"That guy's a soul digger. He'll expect you to work full time, but you'll be doing all the cooking, cleaning, laundry, shopping, and childcare while he plays video games or watches TV."
A person pretending to be something they aren't, or an impostor. This is inferred because of the old alien movies where alien pods appear on earth and the "pod people" dispose of the humans and slowly reproduce the bodies, pretending to be humans.
The pod person was pretending to be my father, but I knew that he was an alien when he acted differently than my father ever would have.