As you see second taunt in the video.
It’s extremely rare to see any form of Sign Language in video game so when I saw that part and it felt so awesome to see developers to acknowledge the language in the game. I appreciate that, and I want to thank you for that. Thank you, Gearbox. Y’all are awesome! 
if anyone didn’t know, he finger-spelled, H E R O.
Edited: I just assume that he pointed himself, so he were trying to say that, “I’m Hero.”
That’s amazing. 
It’s indeed amazing.
Oh so THAT’S what he was doing! That’s super neat!
Wow! Thank you for pointing this out - If you have´nt posted the meaning of his gesture I would have wondered weeks about it! 
This is indeed amazing!
You know… I didn’t like Kid Ultra when I met him a few months back…
He was real, real quiet and reserved. I thought he’d be another friggin’ Toby.
OH BUT I DIDN’T KNOW HE WAS TAUNTING ME WITH SIGN LANGUAGE…
I’m reviewing the footage now.
I HAD NO IDEA YOU COULD BE SO OBSCENE SILENTLY…
You’d better believe I’m brushing up on my ASL.
The TAUNTING WAR has BEGUN!!!
Amazing