They're the only type that's a true enigma to me. I've known a few 5w4s online, although sometimes they can be hypersensitive/not quite...there. And they're fucking hilarious/witty.
A 5w4 I knew in real life liked to stand at the edge of a tall building, look down and explain to me that it was the same as standing anywhere else, only your mindset was different.
The 5w6s are awesome too. But I understand them. The 5w4s I don't... so what are you people all about?