We met in Strasbourg for a language exchange (French-Japanese) when we were both studying there.
We ended up speaking mainly French because I was too shy with my very limited knowledge of Japanese.
One day, we had an interesting conversation that went something like this:
Me (very proud to be able to say one full sentence in Japanese): Kyou ha, watashi no tanjoubi desu. (Today is my birthday)
Sari: Heeeeee?! Me too!!
Sari: Yes! What year were you born?
Me: In 1981, and you?
Sari: Heeeeeee?! Me too!!!
Me: So we were born the exact same day?! Just on the opposite side of the planet!
The following week we both had a small present for each other, without having previously agreed upon that.
And that's how it's been between us ever since. Every year we send each other a present.
This year I got a very cute package including a bookmark in the shape of a fan, some colourful masking tape and an assortment of crayons.
I found it all so cute that I just had to draw it for posterity!