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.
The use of XOXO goes back to the use of an X or cross, which was considered as good as a sworn oath in times before most people could write and therefore used the X in the sam â¦ e way a signature is used today --- a mark of one's word.or xoxo z=kisses and o=hugs and done say its not bc it is. x looks like a target on your lips or what ever. o looks like arms around a person.