Just say Fuck You.
Lol I even say that to people who ask for a hug....
Seriously, this specific lack of backbone just makes me lose faith in human nature.
no enfp that I know would be so inconsiderate to make you feel uncomfortable they would in turn feel uncomfortable, sorry
I've found with the ENFPs I know that they are strangely uncomfortable with physical proximity (and I'm not a terribly touchy person and don't usually initiate contact unless I think we're pretty close and they'd be receptive) rather than being touchy feely. In a couple of cases I felt quite embarrassed for initiating what I thought was natural and very natural, appropriate, heterosexual, same sex, good friend contact and got a very awkward reception. Despite being warm and bubbly people, I think ENFPs have their own distinct sense of space and you have to really be in the inner circle for them to feel really comfortable with it.
I've found with the ENFPs I know that they are strangely uncomfortable with physical proximity (and I'm not a terribly touchy person and don't usually initiate contact unless I think we're pretty close and they'd be receptive) rather than being touchy feely. In a couple of cases I felt quite embarrassed for initiating what I thought was natural and very natural, appropriate, heterosexual, same sex, good friend contact and got a very awkward reception. Despite being warm and bubbly people, I think ENFPs have their own distinct sense of space and you have to really be in the inner circle for them to feel really comfortable with it.
I'm generally really sensitive about personal space and not very touchy at all, but one time I was on an architectural cruise of the Chicago River and there was another couple with us. After I rambled on about something for a while there was a pause and I looked down and I had my hand on the other dude's thigh for no telling how long. We laughed about it but did not continue the bromance any further.
How can I get the ENFP in question to back off and respect my "introvert space" without hurting him, preferably, because I'd like to be friends if possible?
I'm not sure if you can be friends with him, it sounds like he was coming on quite strong there. You could have just told him to take his hand of your thigh or calf, he shouldn't take offense in that.