ashamed, you stand in front of that sign, now it makes you feel even more ashamed. what are you going to go out n and do? you're going to go and eat even more. so it's the tacticoi that i'm arguing with. it's not the fact that people shouldn't take responsibility for themselves, but you cannot scare people into losing weight. >> tucker: that's not true. you can scare people into anything. i've been scared into losing weight.gh trust me. i've got to say, even if i'm argument against you, i know the people who put this ad up are not people i would want to have dinner with. i just know that. so i'm arguing against my own position. dr. marshall, thank you for joining us tonight. great to see you. >> thank you.po >> tucker: a massive thousand page biography of president obama's early years just came out.t. it's definitive and has a lot of facts and information.io stuff you should have known but didn't. we'll talk to the book's pulitzer prize-winning author. in case you want to lower yourid cancer risk, lena dunham has put out a very interesting list of