When I worked at Hallmark, I noticed that there were two separate greeting card sections for "Funny" and "Humor". I don't know if this is just common knowledge or not, but, in my experience, "Funny" applies to a card that is actually funny, and "Humor" applies to a card that has a terrible joke in it. That being the case, I'd recommend that you get a card from the "funny" section. People who read it will actually find it amusing, whereas you'll just end up feeling sorry for the "Humor" card.