Here is my list of 20 Cards Against Humanity Cards that should be a great hit with your friends.
Stalin's Twisted Testicles
Having sex with Osama bin Laden's gunshot wound.
An All-Obama Orgy
George W. Bush's Bush
Bill Clinton's Drippy Dong
A Drink From Bill Cosby
Hulk Hogan's Sex Tape
Random Provocative Ideas
A dolphin ejaculating so hard that it breaks your neck.
Bearly Legal (Bear Bestiality Porn)
Putting honey on your nutsack and dipping it into an ant hill.
Steel Panther Expansion Pack (These are just titles of Steel Panther songs)
Bukkake Tears (Side tangent: I know there is already a card with Bukkake, and I get really irritated when, in literally every game I play, people pretend to not know what that is. I explain it, and they ask me how I know about it. Uh, because I've been on the internet, and literally a quarter of pages on the world wide web involve it. Tangent over)
Eatin Ain't Cheatin
Fucking My Heart in the Ass
Gangbang at the Old Folks' Home
This list took me about five minutes to come up with, and a lot of that was just the time it took to type it. There is no need to pay for new cards. Just make them on your own; I didn't even tap into religious figures and stuck mostly to famous political figures, where you can use people with any sort of fame and put another word for genitalia next to it. This ain't rocket science, folks. Now let the good times roll.