OK, I'll try to add to Topaz' list...
If he likes to sing to himself and, when asked, says that he often hears songs in his head, he could be ENFp.
If he loves peculiar-sounding words and will say them to himself just to hear the sound, he could be ENFp.
If he runs into doorframes when he's in a hurry, he could be ENFp.
If he is endlessly discovering and re-discovering himself in a way that could seem self-absorbed, he could be ENFp.
If he's sceptical about other people's bleak views of the future, he could be ENFp.
If he would rather avoid than confront people he dislikes, he could be ENFp.
If he can start (or participate in) heated discussions about subjects like "free will" or "does human fate run in seven-year cycles", only to suddenly see the funny side of it and do a stand-up routine over the same views he rigorously defended only five minutes ago, he could be ENFp.
If he feels uneasy with just saying what he feels, but will state it indirectly or in a humorous way, he could be ENFp.
If he's sure to contradict himself if you listen to him long enough, he could be ENFp.
If he hates, HATES, HATES boredom and stagnation, so much so that he would rather start a bit of mayhem or self-destructiveness rather than endure it, he could be ENFp.
If he uses the strangest metaphors you've ever heard anyone use, he could be ENFp.
This is fun.
@Topaz: you're wearing purple combined with orange? And you changed your name to "Shrek"?
