I was reading Kdude's blog and he was not enjoying the "SPs just want to party, ain't no reflection going on in that head" vibe you get from some personality descriptors about SPs.
I was thinking about what the different types might say about the other ones and I came up with this:
NFs are the only people who care about others, SPs will ignore you if something better comes along, NTs are jerks, SJs care about accomplishing tasks, not about people.
SPs know how to smell the flowers, NFs care too much about what the flower feels while it's being smelled, NTs are dissecting flowers and SJs don't notice flowers as they run to the next place they are supposed to be.
NTs are really smart, NFs are sort of smart, SJs are maybe a little smart and SPs don't care if they have a brain whatever smarts they have.
SJs get stuff done, NTs talk about intellectual ideas of getting stuff done, SPs get something done if it makes it easier to have fun and NFs are looking at rainbows.
These can be as realistic as you want to make them.