you need a hammer arrester. They sell a nifty hammer arrester that will fit on the pipe supplying the toilet without having to use a torch. fairly cheap ($12) and easy to install. A loose washer in the toilet shut off valve can cause this problem.
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.