The russianlanguage version of blitzkrieg. Slow, plodding attacks from someone you genuinely thought would be decent in a fight but who actually turns out to be a bit, well, shit.
When birds decide to cover something in shit (Preferably something that is new/shiny/just been cleaned), they will declare Shitskrieg upon it, and start dive-bombing it, plastering any and all surfaces with faeces.
An explosive shit that usually comes and goes really fast. You sit at the toilet and seconds later have a bowl filled of turd. Borrowed from the Nazi's "blitzkreig" or lightning war. At the end of shitzkreig you should expect to have a clogged toilet.