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.
For other uses, see XOXO (disambiguation) . Not to be confused with Kisses and Hugs. Hugs and kisses or xoxo is a term used for expressing sincerity, faith, love, or good friendship at the end of a written letter, email or SMS text message.There is controversy as to which letter ('O' or 'X') represents which action ('hug' or 'kiss').he common custom of placing X on envelopes, notes and at the bottom of letters to mean kisses dates back to the Middle Ages, when a Christian cross was drawn on documents or letters to mean sincerity, faith, and honesty. A kiss was then placed upon the cross, by the signer as a display of their sworn oath.