When a man inserts his penis into a partner's butthole and adds the "chocolate shell", comes back out and adds the recieving partner's favorite icecream sauce to the man's penis. Then, the recieving partner sucks and licks everything off of the penis. This goes on repeatedly. Every new addition of "chocolate shell" is called "getting a scoop".
Guy1: "So what happened to that chick you picked up?"
Guy2: "I took her to my place to get some asscream."
Guy1: "Her breath must smell like chocolate shit."