Canker sore. In some cases, the exact cause of a canker sore is unknown, but trauma or injury to the mouth or oral soft tissues may be the culprit. Other possible causes are food sensitivities, spicy, salty or acidic foods, vitamin B deficiency, hormonal shifts and stress. Cold sore.
What does xoxo mean? Hugs and kisses or xoxo is a term used for expressing affection or good friendship at the end of a written letter, email or SMS text message.
3. XD. A symbol with X being the eyes and D being the mouth, to make a seeming of the person having squinched eyes and a mouth wide open laughing. This is usually used to replace rofl, as the X for eyes indicates that they are laughing so hard they may have fallen off their chair. Usually used in mmorpg s and chat lines.