Opposed to popular belief that "notta"="nada"

notta actually is taken from the phrase "not a thing"

In short, notta just "not a" smacked together.

=Nothing.

Originally a contraction of the phrase
'Not a lot' it is often used in place of phrases that begin with 'Not a...' or in some cases in place of a negative.

a gay person better known as a homosexual

Used to express disappointment, disgust, or disapproval

Nothing is happening. (Response to "What's up?")

when there is nothing going on in at the moment