GLUTTON

[noun] [C] - a person who regularly eats and drinks more than is neededMarco's such a glutton - he ate a whole packet of biscuits while he was watching the film.If you are a glutton for something, you like it very much.Sophie is a glutton for books.If you describe someone as a glutton for punishment, you mean that they seem to enjoy doing something that you consider unpleasant.He's a real glutton for punishment, taking on all that extra work without getting paid for it.