When your allergies get real bad and the inside of your nose is tickling.
“Ah, dude. My allergies are so bad, I have feathers in my nose!”
Fish-feather is code for scale, as in a scale used to weigh goods and or precious stones.
Hey Tom you got a fish-feather? What's a fish-feather? A fish doesn't have feathers Tom, what does it have? Ohh scales
it's one of the things that most Dinosaurs love.
-Dinosaurs have feathers!
*Jurassic Park fans scream in pain*