javascript anon here, made this quick thing to make decoding messages from the twitter easier
Hit F12 (on chrome, just get to javascript console on your browser otherwise)
paste this in:
let m={A:"C", B:"Z", C:"T", D:"I", E:"N", F:"W", G:"V", I:"P", J:"K", K:"G", L:"Y", M:"R", N:"X", O:"F", Q:"H", R:"B", S:"A", T:"D", U:"L", V:"S", W:"O", X:"E", Y:"M", Z:"U", H:"J", P:"Q", " ":" "},decode=msg=>{return msg.split("").map(c=>{return m[c]}).join("")}
then you can type in
decode("WEIRD SHIT")
and it will decode it
im using the cipher mentioned in
https://pastebin.com/DAJg7qKJ and im sure even non-programmers can figure out how to edit it to work with different swap-letter ciphers