A Qoomer is a person who supports Qanon and doesn't know of Operation TRUST. These people don't knowthe first thing about psyops or how they work. Comes from the word 'coomer' and the whole '-oomer' meme series.
Normal person: "Man, I wish Donald Trump wasn't such an idiot. He doesn't deserve his followers."
Qoomer: "OHHHHH NOOOOOO I'M GONNA QOOOOOOOOOM!!!! OHHHHGAWWWWD I AM QOOOOOMINGGGGG!!!!" *does a series of elaborate mental gymnastics to say that Trump still hasn't lost.*
Portmanteau of Qanon and coomer. A perverted old man disconnected from the out side world who both retweets 50 porn accounts a day and argues with people over the most inconsequential things from the same account. Known to hold borderline to full fascistic political views. Final stage of the Incel evolution line.
Guy 1: It's sad. John has gone full Qoomer.
Guy 2: Didn't he say he was an Alpha Male?
Guy 1: Yeah.
Guy 2: Huh, weird.