I agree. The "Hell" in "Hell yeah." emits the passion the person has for what they are say yes to. Whether pitching an idea or asking for a girl's phone number

I agree. The "Hell" in "Hell yeah." emits the passion the person has for what they are say yes to. Whether pitching an idea or asking for a girl's phone number we all want to hear some level of passion in the yes. A simple "Yes." is very close to a "Maybe" but "Hell yeah" says "I agree and I'm am just as paaionate as you are about it."