After Mark Cuban makes an offer to tattoo aftercare company Mad Rabbit, entrepreneurs Oliver Zak and Selom Agbitor ask Lori Greiner if she's interested in making an offer, prompting Daymond John to ask them if they're crazy. Then they ask Mark Cuban if he'd be willing to partner up with Lori -- will it cost them the deal? From season 12, episode 18 of 'Shark Tank.' Watch 'Shark Tank' FRIDAY 8|7c on ABC, streaming, on demand, and Hulu.