In my personal experience, out of all the NT's, I think ENTJs are the least funniest.
ENTPs can't help but resort to humour first, if they see that association being blatantly displayed. The workings of Ne leading....it's like a big neon sign, like the joke just begs me to make it.
Usually, I snort/laugh as soon as I see the association, and then, determine, shall I say it or not? I dunno, it sounds weird but the humour makes itself, and I'm the first receipient of it, and then, I share with others...that's how my thought-process works for humour. And, ENTPs are good at twisting words to play to humour. Wit?
INTPs are the dry version of ENTP humour.
INTJs come off the left-field, and often times, it's very self-contained, such that, like others said, it might be
, awkward, socially inappropriate.
And, ENTJs, to me, resemble almost SJ humour.
To add: NTJs seem to go more for the personal, while NTP go more for the detached. Anyone and everyone is applicable.