Talk:ロキ (Roki)/@comment-189.130.189.229-20181002014405/@comment-25340994-20181002060045

https://en.wikipedia.org/wiki/Vox_AC30 It's a guitar amp.

(https://utaite.wikia.com/wiki/Nico_Nico_Dictionary It's not a complete list of every slang ever, but here's also a link to stuff commonly used online/for NND songs/comments at least)