Slang of the day

chier (shee - ay) = to shit

Used in a variety of expressions:
faire chier quelqu'un = to piss someone off, e.g.:
tu me fais chier! = you're pissing me off!

se faire chier = to be bored, e.g.:
je me fais chier! = I'm really bored

envoyer quelqu'un chier = to tell someone to piss off

en chier = to go through something difficult, e.g.:
j'en ai chié pour finir ce livre = finishing this book was painful

ça va chier des bulles! = there'll be hell to pay! (literally "it will shit bubbles")

ça chie dans la colle = something's not working (literally "it's shitting in glue")

And of course:
un chieur / une chieuse = someone who's a pain in the butt