It will ruin your life. If you aren't a horrible person already, you will soon be.
You will play Cards Against Humanity, and you will be shocked, appalled, and worst of all, you will learn and adapt.
You'll reach for your smartphone and search for terms you've drawn such as "The Übermensch", "Heteronormativity", and "The Three-Fifths Compromise". You will commit these and many other newly-learned words to memory.
To really have fun in this game your level of English should be rather advanced, and you have to be familiar with American culture, since the game is originally from the USA.
And remember — this game will unleash your inner demon, so you should (at least) understand and (at most) accept mature jokes.
Join us around the table and laugh your head off.