I think this young man really wants a baby chick, but has not had chickens long enough to really understand how all that has to work. The chances of him being successful with underwear hatching is not really very good but it would be sad if by some chance he succeeded and the chick then lost because of ignorance/lack of information about the care a hatchling needs to survive after hatching. As most of us here know, even if he successfully hatched and brooded this single chick to the point it was actually ready to join the flock it would have a hard time being accepted into a flock a full 6 months older, because chickens can be quite mean and are not readily accepting of new members, unless born to present members within the flock. As a single bird, it would be picked on pretty badly. At Lumpy, you are in the right place, as everyone here loves baby chicks and have the information you need to succeed in raising them. However, I would be sad if you put a lot of energy into producing a chick that would have a very hard time in life due to lack of socialization with siblings and other chickens because it has to be isolated for it's own safety for most likely until it is at least 6 mos old, at which time it would be difficult for it to even comprehend that it is supposed to be a chicken. That being said, I find your grandmotherly qualities somewhat endearing and hope you continue what to all of us here is a rewarding endeavour, keeping and raising poultry. Wishing you the best that life can bring and if you direct the same persistence and energy you are showing toward this hatching project (but do a little research before starting it) you will be bound to succeed! Good luck to you!