A person who is inclined to be, was caught in the act of or is currently representing their self as a complete and utter douchebag by virtue of a blatant, ridiculous, and near-impossible level of toothless, ignorance.
1) "On the contrary noobsauce, Web T.V. sucks my balls!"
2) "Sure noobsauce, as a Technical Support monkey helping you over the phone, I can certainly see what you are doing on your computer from my computer."
This is when an uber leet player pawns on noobs. After killing the noob he then puts a piece of him in his bottle of sauce, which is why it is called his noobSauce.
Mr. Uber l33t just pawned the noob n3m3sis, he then adds some of him to his bottle of noobSauce.