Basement jokey 

Fully grown man who is a gamer and lives in his mums basement.

Why does this guy keep beating me?
Friend "It's probably because he's a basement jokey."

Basement jokey by Hazza-gaz September 13, 2019

Basement Jockey

Someone who spends most of their time in their relatives' basements for their own personal hobby. Linux coders.

"Dan spent all night downstairs coding up the new kernel patch, he's a real basement jockey"

Basement Jockey by Billy_Brasky1 December 31, 2008