Holsh

Holsh is a word used in response to a shocking event, it's a portmanteau of the words 'Holy' and 'Shit'. The word used as a verbal form of the classic 'spit take' from Western comics and cartoons where some spits out their drink in response to surprise or shock.

Person 1: Is it a bird, or is it a plane?
Person 2: It's a plane and it's flying straight towards us!
Person 1: HOLSH-!