OPme
This is a plugin created by me(zLokkiN) and a friend of mine(nayoshi12). We created this plugin to allow pesky users to "OP" themselves with a little twist. When prompted with a question; "Hey, can i get OP", you can simply say "sure, just do /OPme". by them doing this command it will simultaneously kill them and send a tellraw stating "Do you feel it Mr.Krabs?!" and "A player named " + player.getName() + " tried to be a god, and OP themself, what an idiot!".
After which everyone would know at this point that said player is an idiot thinking a server would allow them to get OP without background knowledge of them.
If you are actually giving a player OP, you would want to do it through console because there may be some conflicts at the moment with essentials.