Last Christmas, a good friend gave me a bottle of expensive perfume. Very nice -- except the bottle didn't come in a sealed box and instead was in a generic gift bag.Busted. This was clearly a shameless act of regifting -- and perpetrated by a childhood friend! Truth is, regifting is an old practice that's becoming increasingly customary (though not necessarily desirable if you're on the receiving end). We all get stuff that's not the right fit or we don't like, but that other people might enjoy. Unless, however, you want to sow resentment among friends, coworkers and aunties, learn a few rules before guising an old gift as a new one.