toilet insect; bugs found in toilets
Colloquial term for insects commonly seen in bathrooms or toilets, such as drain flies or silverfish. Not a formal biological term.
There was a toilet insect in the bathroom, so I cleaned it.
You know, 'toilet insect' isn't the official name, right?
Compound of 便所 (toilet) and 虫 (insect). A straightforward descriptive term for insects found in toilets, likely coined in colloquial speech.