I was cleaning the toilet in my office when I saw a cockroach crawling towards me. After a while, I saw it resting near the door. I seized it by the antenna and dropped in into the toilet bowl. It couldn't be flushed away no matter how many times I tried. The cockroach, if I could hear it, might as well laughing at me and say, "Hey, I am invincible!" I gave up and took it out from the toilet bowl (of course not with my bare hands, but with the help of the toilet brush) and threw it out of the window.
So never waste your time flushing a cockroach. Don't even think of it.
So never waste your time flushing a cockroach. Don't even think of it.