If you're looking for a gift to give that is less than loving, why not get someone a "Halitosis Detector
"? This device measures bad breath
and categorizes it into four different stages. There are even some versions that have an alcohol meter. All you have to do is breathe on a sensor above the screen, and the results are shown in the form of a smily face, shocked face, and so on. The best thing about it is that you can carry it around in your pocket. Yeah, sometimes the truth hurts, but it's better than scaring away others and hearing about it from your boyfriend/girlfriend, friends, coworkers, and complete strangers!
[The photo above is an example of one of the halitosis detectors sold right now.]