It should have been "black humor" - not everybody´s cup of tea.
It´s typical for the Czechs - in the years of Nazi and communist dictatorship it was sometimes the best reaction possible in order to survive internally.
Didn´t want to hurt anybody.
Thanks christopherstow for the link. Incredible, simply unbelivabe. The swedish guy with the camera in the hotel restaurant in the end struggling to keep himself up in the rising dirty water up to his neck.... and the older couple sweapt away by the water when condrete wall collapsed.... both probably dead moments later now they say 60.000 dead or missing.