r/woooosh (or just woooosh) is used in response to someone taking sarcasm literally, and you use it to call them out on not picking up on the sarcasm.
The onemonepia comes from the saying “the joke went over your head” and it’s (literally) the sound of the joke going over the person’s head.
The “r/“ component is because that’s how reddit organizes their subreddits
r/woooosh is also exclusively referencing the subreddit (a community on reddit) about people not picking up on sarcasm. If you don’t know what reddit is, just say woooosh, otherwise you’re a pretentious idiot who uses vocabulary you don’t know the meaning of to sound cool, but instead reveal you’re actually a dumbass.
Also it is correctly spelled with 4 o’s and no h at the beginning
Person A: You know how I tend to stay out of the whole voting issues? Well you know how convicts are allowed to vote in Florida now?
Person B: Yeah?
Person A: Well I think we’re doing something seriously wrong here
Person B: I mean I agree, but why do you think so?
Person A: Because I think ONLY convicts should be allowed to vote
Person B: Are you stupid?
Person A: *deep sigh* r/woooosh
Person C: Why did the chicken cross the road
Person D: why
Person C: there was a crosswalk there for pedestrians
Person D: haha I like antijokes
Person XXY: r/whosh
Persons C&D: what? that doesn’t even make sense.