Uh, no. Actually, it's a noun. But it's not spelled right.
5 seconds sound clip from the The Pursuit of Happyness movie soundboard.
You can hear this line at 00:16:42 in the Blu-ray version of the movie.
Quote context
[...]
- You ain't had to add the good riddance part.
- Bye.
- It's written as P-P-Y, but it's supposed to be an I in happiness.
- Uh, no. Actually, it's a noun. But it's not spelled right.
- Yeah, that's spelled right. But that's not part of the motto, so you're not supposed to learn that.
- What's that say on the back of your bag?
- My nickname. We pick nicknames.
[...]