naval lint 

The fluff or lint that you get in your belly button, Always blue in colour regardless of t-shirt/shirt colour.

There are many theories on this topic, One being that the colour of the lint is in correlation with the colour of garment you are wearing at the time. This is NOT true, if you see photographs of different coloured lint, they have been photoshopped or Paint shop pro'd (depending on which you prefer, Lesser minded people usually prefer Paint shop pro studies have been done).

person 1) OMG I have pink naval lint in my belly button. . .
person 2) Dude no you don't, it has to be blue.
Person 1) Yep it does, I photoshoped this, harhar har. . ..

naval lint by Solkolov Slavinkski July 26, 2008

Navel lint 

Navel lint is one of those things or folks that tend to exist for no particular reason and which serve no useful purpose. You'll be sitting out on the back verandah with a beer in your mitt gazing out on your domain and you'll be having a good old scratch of your belly and, in your boredom, happen to inspect your belly button, having forgotten all about it or not noticed it in quite a few years. You'll give that a bit of an explore and lo and behold...there it is...navel lint. No discernible colour or hint as to its source and it manages to take your interest for a good two or three seconds while you wonder about its origin or purpose and feel a vague sense of pleasure having freed your navel of it. It's perhaps somewhat like the pleasure that only a boy can understand from a good successful nose or scab pick.

So that's what navel lint is - someone who has much in common with a crusty old scab or a bit of nose pick. Best way to handle them is to just flick them away.

There's a piece of navel lint that pops into the forum once in a while with the express purpose of stinking the place up. Nine times out of ten I'd ignore it but this time it made some particularly obnoxious and insulting remarks...

Navel lint by Mitziel September 19, 2013

Nasal lint 

Nasal lint is the crusty dried booger you find on a used bath towel that comes back to life when the towel is used again

Oh my god. I didn't notice that nasal lint until I dried my face and it became a LA oyster

Nasal lint by Pernod Q. Bentwhistle August 20, 2015