A Noob toob is someone who is really stupid, and misspells commonwords, also someone who cant speak properly or use the right context of english.
(also someone who spells tube toob)
e.g. (lucas said)How do i spell the word elf?
e.g. (lucas said)it saids plz click sex so i did and i say i didnt
e.g. (Steve wrote) you place the sodium bicarbonate in the test toob