Pendejo is a vulgar Spanish-language term of abuse. To call a person a pendejo is essentially to call him stupid, although it also carries implications of wilful stubbornness and rank ineptitude.
A toilet may run periodically due to a problem with the flapper, the flapper seal, the flapper chain or a high float.
The phantom flush--that mysterious phenomenon in which your toilet seems to flush itself--can be little jarring late at night, not to mention a waste of water. the quick fix The problem is usually caused by water slowly leaking from the cistern into the bowl because of a worn-out flapper valve.