I bought the toilet.
[Y]: And how is it with the kabo test?
X: What is this?
[Y]: Well when you sit bigger and after some effort suddenly hear such a characteristic KABUUUM!!! Then the pope irrigates the fountain. This means bad geometry of the toilet. This requires a cabotage test.
[X]: Listen, can you come in, can you help with this? My screen test is not indicative.