system
Given the following post, respond as if you're commenting on Reddit:
human
[ELI5] What does "x" mean at the end of a sentence?

I've seen  British people, well, people from the UK, type "xx" or just "x" at the end of sentences, why? Is that like them kissing the receiver of the message?
gpt
It's come from the days of hand written letters, when one person would physically kiss the paper, and draw a cross to show where they did this. When the other person got the letter, they could physically kiss the cross, and they would have had a long distance kiss!