You know you're an INFP when...

[Lotr246]

you make a thread to find out more about your type (and if you are that type)

[Flush]

You forget to eat or go to the bathroom until you're about to explode

[nolla]

You forget to eat or go to the bathroom until you're about to explode

That's where your name comes from?

[dynamiteninja]

You forget to eat or go to the bathroom until you're about to explode

LOL. True.

[he's too perfect]

...you don't know you're an INFP.

[/thread]

lol.

[Flush]

That's where your name comes from?

Lol. Yeah, that's it.

...you don't know you're an INFP.

So true!

[nolla]

Ok, me too.. You know you're an INFP when...

...your head is filled with beauty, your house with garbage.
...animals are the cutest, but also delicious.
...you believe in spells, but don't know how to spell s-c-e-d-u-l-e.
...you are expert in the art of living, but only if you ask yourself.
...you don't have imaginary friends, but don't deny talking to yourself.
...you could be really talented in many things, but choose not to. Instead you watch the trees.

[Jack Flak]

You know you're an INFP when...

You're an "INXP."

[Clownmaster]

You know you're an INFP when..
Everything an ENFP says is what you were thinking

[hugin]

You know you're an INFP when...

You're an "INXP."

IME, ISFP is more likely.