Booty Twitch 

(verb)
The act of Michael Jackson's perfect little ass twitching underneath those black slacks of his when he walks.

DAYUM. I can't even watch the Bad Tour without fapping over that booty twitch.

Booty Twitch by GRYFFENDORE GURL September 9, 2010

Twitch Booby Streamer 

A person who is in possession of breasts (generally large) which are exploited for the gain of followers, subs or donations of bits and direct currency within the Twitch Platform. Booby Streamers can also come in assorted variations upon differing platforms dedicated to videos and streaming. Booby Streamers are generally not appreciated or respected on said platforms such as Twitch.

"Wow, is that a Twitch Booby Streamer? What a thot, am I right lads?"

Twitch Booby Streamer by Paul Ninja August 16, 2018