When a foul, smelly, disgusting, putrid, rancid, sulfuric odor, (Like that usually found near a sewer hole, garbage dump, or dead body) is emitted from another humans mouth into your face.
While i was showing Shelly some pics on my phone, she got up over my shoulder...... HALITOSIS! She hit me hard with some lazer breath! Damn,... got my little sister too. Our noses will never be the same. Jeezus.