But, my favorite among all of those tricks is this one byDo It With Daveon YouTube!
This motion will help push the water through the P-trap and gravity will force the clog out.
After a couple of seconds, the toilet should flush successfully.

Image credit: Do It With Dave via YouTube
*All these images are credited toDo It With Davevia YouTube.
How to Unclog a Toilet Without a Plunger


