These requests are unethical and will be deleted.
When you wanna say 'fuck! In general, for anything extremely unpleasant.
And as well documented Russian is a very word morphing language, so there are a lot of different words that these two mainly the second one are foundation of.
Kuchinsky Prison Encyclopedia, Кучинский А.
Alexander Gorokhovski suggests the derivation from the huic lit.
Currently used by Ukrainian nationalists to refer to Vlad Putin.