Using a plunger is going to be much more effective.
Water
Use a toilet snake
no
If there are urine stains in your toilet bowl, pour a generous amount of bleach into the toilet bowl and under the rim, then leave overnight. The next morning, flush the toilet and pour more bleach into the bowl and scrub with a toilet brush.
You waste Coke
You waste Coke
You would need to pour the water into the bowl.
You would need to use a container of water like a 5 gallon bucket and pour it into the toilet. As you pour it in, the excess water will cause the toilet to drain.
pour petrol in it and drop a lighted match in it
If you are talking a cup or so it makes no difference.
snake
because the upstairs toilet drain was clogged up.
Snake the line