"It's so laggy, I can confirm off Kunai"

I'm sure we've all seen Xian promoting a phone with one hand while kicking arse with the other...

He says "look it's so laggy I can confirm CA off Kunai"...And then proceeds to confirm CA off a Kunai from halfway across the screen...

Like, what???...How did he know that he could confirm CA off Kunai just because it was laggy???...I can't confirm fuck all when it's laggy, all I know how to confirm is Kara-Options into EX-Power-Off-PS4...

Are there like some lag tactics that need learning as well as what's in the game??? lol...

I don't get it lol...