"You Better Not Waste My Time" also known as "Better Not Waste My Time" is the debut single by British MOBO-award winning hip hop group N-Dubz. It was released on 19 August 2006 as a digital download only single, whilst the group was still self-funded. It was then later re-released on 22 October 2007, this time with a physical release and under the group's new record label at the time – Polydor Records. The single was later featured on N-Dubz's Platinum-selling debut album Uncle B which was released in November 2008.

"You Better Not Waste My Time" is a mid-paced track which features an upbeat rhythm consisting of lightly placed keys, horns and strong bass. It is both written and produced by the group and Jack Freegard. The song features vocals and rapping by all three of N-Dubz's members: Dappy, Tulisa and Fazer. The song's intro and chorus are rapped by Dappy and Tulisa is involved in the backing vocals and reply verse of the song. The song then ends off with a verse rapped by Fazer. The general theme of the song is about growing up, the difficulties of it and how to use it to make you stronger. The lyrics involve stereotyping and the discriminating of "untalented" scholars or kids who never completed their school career. Examples of this include Dappy's verse "Just because I neva went to school don't mean I can't be perfect". Tulisa's reply verse involves the difficulty that girls face during their school years and how jealousy more often than not results in conflict in competitive situations at school with lyrics such as "So much hate, lies an deceit" describing the extent of the conflict of these situations between girls at school. The second half of the song is aimed inspiring the song's listener, from the personal experience of the group, to not take notice of the difficulties of life but rather to rise above it despite what people say. An example of this is found in the line "I love my Nike Air, but now movin onto Gucci and Prada". The single was released and re-released before making the group's debut album, "Uncle B" and therefore didn't have an effect on the album's sales which were first boosted by the group's later single "Ouch" in 2008. The re-release of the song featured a significantly shorter version of the original; the re-release version being 03:30 long and the original 05:10. Tulisa's view on the re-release of the song:

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