Some semi tech geeks are here claiming there is nothing the Nigerian government can do to enforce the twitter ban.
If I was tasked with enforcing the ban, doing it would be an infinitesimal. Of course users may access for a few times not long
before I detect Twitter traffic through pattern matching and block it It would also setup a team watching out for the most used vpn apps and blocking their connection patterns, open ports and whatever encryption method they use to connect. You may get connected but good luck accessing blacklisted sites.