Expelianus 

A spell that can be cast to end constipation.

Harry suddenly shouted "expelianus" and his cramping went away.

Expelianus by desotobear August 1, 2013

expeliamos 

What you tell Harry Potter dorks when you get really pissed off at their nonstop Potter chit-chat. Basically, it's like saying STFU except it is more offensive to those pointy-hat-wearing Potter nuts.

HP dork: "I read the 7th book 17 times already, and tonight I'm going to read it again. I can't believe what happens to Ron and Hermione. Oh my gosh, it's like...."

Anti-Harry pedestrian: "Expeliamos! Don't make me call Voldemort on your nerdy ass? Now shut your mouth and do something productive."

HP dork: *starts crying profusely"

Anti-Harry pedestrian: "There there. I didn't mean to hurt your feelings, but please take my advice and stop reading Harry Potter and dwelling over this fake nonsense. How about reading something real like Grisham's The Firm? Eh? Try it - it might help you a bit."

expeliamos by Adel7 August 27, 2007

Expellianus 

The act of taking a massive shit

Ron: I’m touching cloth and it’s a big one
Harry: you need to use the expellianus charm

Expellianus by Yorkshire Jim October 22, 2022