>>6418112It's a sarcastic joke, actually!
See, there's a difference between irony and sarcasm, you should look into it.
About the joke that's flying high over your head, you see, ohayo is actually pronounced as "oh-high-yo", and since "high" is pronounced the same way as "hi", and both "hi" and "yo" are a form of greeting, just like "ohayo", AND since autistic girls in my moe anime shows sometimes stutter when saying "ohayo", making it sound like they're first saying "o-oh" as in being surprised, also there are those anime girls that like to scream it out loud like niggers, further increasing the joke's funny levels since you're also using "yo" which is mostly used by the darkin.
Reference material:
https://www.youtube.com/watch?v=0UtDF2gxfVAYou see, it's a very deep joke.