Toilet not flushing properly? Perhaps you've got FATBERG in the sewers.
That's what happened when residents in an apartment building in London noticed that they couldn't flush their toilets: a giant 15-ton blob of congealed fat and baby wipes had lodged in a sewer drain. That's enough "wrongly flushed festering food fat mixed with wet wipes" to fill a double-decker bus!
It'll take the utility company Thames Water six months to remove Fatberg, which you can see in a video clip below: