2. Leatherface
Any horror or exploitation film fan knows that Leatherface does not paint a pretty picture at dinner time. He dresses up like a woman and rushes around, not really doing anything productive but destroying everything he comes into contact with. Take him to a dinner party and he would probably insist on bringing the whole family along, including his decrepit old grandfather who may just give half the party a heart attack. How exactly you would actually invite Leatherface in a way he would understand is dubious, but why you would is baffling. I guess he could carve up a mean roast, but his attention (and chainsaw) may not be focused on something that is already dead.