Thank you everyone so far, I'm having a good laugh here. The face of a hen! Windowpane glue! Crazy stuff.
@Martin
"Mam to w dupie" is probably the equivalent in meaning to our "je mi to u prdele" (it is next to my ass/down by my ass = that's how little I care).
And you're using our "prdel" to refer to jail? "Idź do pierdla"? We use the German Loch (hole) for jail but it's not rude, just colloquial. I wonder what Germans use? A French word?

@Alharacas
Thanks to you I remembered some Czech ones that we stole from you

"Krucifix!" - "Sakra!"- "Sakramentský... !" (adjective) - "Ježíšmarja!" - "Šmarjajozef!"
And the best one comes from Trautenberk, a character from an old kids' series. They never admitted he was German, they just hinted. He curses "Himmel-Herrgott-Donner-Wetter-Kruncajs-Element!"