Bang out

A person who sits at home playing a single game for hours and doesn't go outside.

Is also said to someone who is amazingly good at a video game, and never plays anything else.

Daniel is such a bang out at call of duty!

I can't stop being a bang out at this.

chillman

A person who sits back and gets insulted without even caring.

Ian is such a chillman, he never roasts back.