It seems like the person who commissioned the sign is: (a), ignorant of the word’s meaning, thinking it refers to something else(which itotheir mind may be cool – cutting edge); or (b), Someone who is contemptuously making a statement about his or her view of the rest of humanity.
I’m beginning to hear “wanker” quite a bit, but contextually it seems to be used more in the sense of “jerk” rather than in its basic meaning, although in the UK, I’m sure it includes that connotation as well.
notoneoffbritishisms.com 
It seems like the person who commissioned the sign is: (a), ignorant of the word’s meaning, thinking it refers to something else(which itotheir mind may be cool – cutting edge); or (b), Someone who is contemptuously making a statement about his or her view of the rest of humanity.
I’m beginning to hear “wanker” quite a bit, but contextually it seems to be used more in the sense of “jerk” rather than in its basic meaning, although in the UK, I’m sure it includes that connotation as well.
Darn! I was just there in that part of town yesterday. I would have loved to have seen what that store was. I may have to make another trip soon.
There’s an episode of NCIS where a character (Tony) refers to his co-workers as “a pair of wankers” – never has anything jarred so badly for me!