As all rap aficionados know, rapping the alphabet is the best way to show off your prowess at the mic.
Particularly when you do it at warp speed, like Mac Lethal, nailing it here on his 67th take (kudos for admitting that, too).
The video, released this week, reminded us of some of our other favourite rap alphabets.
There's Blackalicious of course, who kicked the whole thing off in 1999 with the still-excellent Alphabetical Aerobics.
But our all-time favourite is probably by the effortlessly magnificent Lowkey, who released Alphabet Assassin in 2008.
Now you know your ABCs.