If by the word 'cesspit' you mean a septic system, then the pipe is plugged between the house and the primary tank. You must have a 'cleanout' in the wall somewhere above where the main drain goes outside. Find this and snake it, - or get a septic pumping company to pump out your tank and then snake the pipe from the tank end while it is empty.
I do not know if popcorn can be flushed down the toilet. So, I wouldn't try it.- Ashton Smith
The sewer
Depends on if it needed to be flushed or not.
Bad venting
Water and waste
Cotton buds SHOULD NOT be flushed down the toilet. Anything flushed down the toilet that is excrement or toilet tissue my block the sewers and cause backup of sewage effluent into homes.
In ancient Egypt
No you can't
NO way
no
SWIM!
NO.