I always had a habit of boasting how good I was at blowing bubbles with a bubble gum.
Once my cousin challenged me that he could blow a better bubble than me. Then I blew such a big bubble that it blasted and it covered my nose completely and I couldn’t breath.
I was suffocated. Soon, my brother frantically pulled it out and my breathing returned to normal. From that time I vowed that I will never boast about anything.