Does anybody mind if Joe Biden uses the word fuck as an adjective? I don't. Then again, I use it all the time myself.
It's not like he told Barney Frank to go fuck himself, which they have Dick Cheney on tape doing. I don't even mind that very much. Dick probably was a little grumpy at the time but I don't think there was any malicious intent. It probably wasn't a slur against Frank's homosexuality. Cheney himself is at least as Gay as Barney Frank. I suppose you could make technical argument that this is not true, since his penis hasn't been functional since the early Seventies but it seems like kind of a thin argument.
I say let Joe turn loose with the blue talk. It probably helps make him feel young and hip and I think that's important to him. People seem to understand.