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.
I've heard it means love and kisses, or hugs and kisses (which I think the x stands for hugs, and the o as kisses).Source(s): personal opinion. jan51601 Â· 8 years ago. Thumbs up.K first let me say I have no Idea when or where it originated ,but for as long as I can remember, if someone put xoxo, usually at the very end of a letter or note that person was sending you hugs and kisses.