I can relate to this.Yeah this is the only thing that's different between us. Most people would say I lack a certain...'sharpness' that ENTP's possess.
The thing is I do push buttons and have a faecitious sense of humour, but it seems very surpressed compared to what I see an ENTP to be like. I think in my case it is more to do with my countries culture of 'taking the piss' which each and every one of us is exposed to all our lives here. It's not so much about being thick skinned as it is a collective opinion that if you take anything jocular seriously, there is something wrong with you. Of course given human nature, it is more like collective hypocrisy.
This isn't really related to any type by the way, but there is a part of me that loves to be insulting, to tear up falsity and shove social norms in peoples faces. I despise being polite when im really pissed off, it's completely dishonest and serves no purpose but to grind up an individual inside. Take it out on those who deserve it, as soon as it comes, ive found that's the best method.
Just wish I could adhere to it at ALL times. Often I hypocritically dont.