/pw/ speak is an amalgamation of Meltzerisms ('fraid so, you tell me, reading is your friend), Trumpisms (many people are saying this), Territory speak (Get a tan, get a clue, variations on mark), old WWE reality show references (take a bump, intensity), /jp/speak from Joshifags, Hogan speak (brother, we say that word, work yourself into a shoot, Corny/Lastisms, /pw/asp/ originals (planet retard, 1992, Ojama, Bitchtits), and fucking ANCIENT memes from 2011 when /sp/ and /mu/ were the hot meme boards (>2011/ISHYGDDT, Based).
Occasionally you will get even more outdated lingo and references to /b/ speak if you happen to come across a fellow geriatric /b/tard. And some people just spout reddit and twitter wrasslin memes here with no sense of irony.