Dude Thrills are rare, but if you can find em, buy in bulk and give some to your friends. Then when they realize how bad it tastes, yell pwned!11!!@1`1~!1~!11~122211!!!! (the first 2 is silent), and then turn em into a garage sale! (the seenus definition.)
Cheap thrills is recieving pleasure or "thrill" and spending very little or no money at all on it. To gain more understanding listen to Cheap thrills by Sia.
The term could also be used as another word for a free bootycall.
Jessica: I'm a bit low on cash.
Jord: No problem, cheap thrills this weekend?
Jessica: Yeah we don't need cash to have a good time.
Or
Brandon: You up for a cheap thrill?
Natasha: Boy, I ain't about that cheap hoe life. You better be paying for this.