based on a used welders bench, when welding lots of small lumps of metal fly of the object being welded as sparks and solidify on the benchgiving it a spotted lumpy look. therefore a girl with a face like a welders bench is ugly, spotty, has a pock marked face, generally rough and not a pleasant sight
Peyronie's disease is a rare condition involving a deposit of scar tissue or plaque in the erectile tissue in the penis, sometimes causing painful and curved erections. A fellow nicknamed Berg suffered from a severe case of Peyronie's disease. As a result, his erect penis had a significant curvature. This gave rise to the somewhat popular saying "bent like a Berg cock".