Kekystavey
A phrase with many definitions but its main defintion is used to descibe annoying/rude people or inevitable/harsh situations,But can be used as an informal greating/gesture among friends.
Dorota "Kekystavey! That guy just spilt his drink down my dress" Krzysztof "I cant go on holiday to Mazurskie because the trains have increased their prices and i cant afford it anymore Kekystavey!"