UKwon's teaser is all kinds of awesome contemporary dancing and an inexplicable gun.
But my favorite teaser is Park Kyung's:
Lol! He's so serious with his Dougie...
...and I love how everyone's face is like wtf, especially this guy:
This is the best teaser I've seen all year. Great job Block B, keep up the good work.
Check out the rest of the "Nillili Mambo" teasers here and stay tuned for more.
Source: LOENENT, Screencaps by Oddness/Weirdness.