Weird Fact #53--Origin of X and O
'X' Equals a Kiss
Xs and Os have been around for a long time. Traditionally they have meant kisses and hugs at the bottom of a letter (or e-mail, in today’s world). A letter with an X standing for a kiss has been recorded as far back as 1765. The X represents two people kissing each other, while the O symbolizes the arms of people hugging.
http://www.everydayhealth.com/emotional-health-pictures/kiss-and-tell-history-of-smooching-0316.aspx?xid=tw_everydayhealth_20120214_kiss#/slide-9
Xs and Os have been around for a long time. Traditionally they have meant kisses and hugs at the bottom of a letter (or e-mail, in today’s world). A letter with an X standing for a kiss has been recorded as far back as 1765. The X represents two people kissing each other, while the O symbolizes the arms of people hugging.
http://www.everydayhealth.com/emotional-health-pictures/kiss-and-tell-history-of-smooching-0316.aspx?xid=tw_everydayhealth_20120214_kiss#/slide-9