I still don't see how that is the offensive part. Being called a penis (or any synonym) can obviously be offensive - though it can also be used in an endearing

I still don't see how that is the offensive part. Being called a penis (or any synonym) can obviously be offensive - though it can also be used in an endearing way as well - and tying that into someone's name doesn't, in my opinion, make it any better or any worse. I suppose maybe if someone called Winer has spent a lifetime listening to the same sort-of-pun then maybe the compounded effect would make it worse, but as a general rule, if that was my surname, I can't see myself caring about whether an insult connects to my surname or not, either way I'm being called a dick.