Focusing on Nigeria, this paper explores the efforts of an online youth leadership programme, Days of Change, which succeeded in galvanising, uniting, and engaging Nigerian youth both online and offline, across social, class, and ethnic divides concerning nation building. The paper provides a unique example of the ways in which online media have become veritable sites of popular urban youth cultures, from which young people negotiate the unstable landscape of post-coloniality that the African state has foisted on its vulnerable youth population. More importantly, the paper seeks to lay the groundwork for further theorisations on how social media can be utilised as a vehicle for anti-colonial youth engagement Africa.