Bat in the cave

1)Is the dirt in the ear called ear wax?
2)How about the dry dirt in the nose? I heard something like blogger.
3)How about the liquid in the mouth that we want to spit out? Mucus, phlegm or something else?

Thanks.

How charming.

1) Yes, it's called earwax.
2) There are numerous slang terms, including snot, booger (US) and bogie (UK).
3) Mucus and especially phlegm would be correct - mucus is a more general term, whereas phlegm is specific to the windpipe and throat. If you're looking for very impolite slang, "hawking up a lugie" will do.

How about the all-inclusive "bodily fluids"?

Several episodes ago, a character on "Sex in the City" told her boyfriend that he had a "bat in the cave." She was telling him that he had a visible booger. (Yucky word.)

The "bat in the cave" is really funny". Thanks.