I had a friend in college who went everywhere with two tupperware containers. When he was asked whether or not he wanted left overs he would feign a no, but as

I had a friend in college who went everywhere with two tupperware containers. When he was asked whether or not he wanted left overs he would feign a no, but as soon as he was asked a second time he would say "I guess so" and pull out his tupperware.