The first time I talked properly with my girlfriend, was on skype, where her name was "titi-chick". Now, I am a 15 year old dude from Denmark, so that was very unusual xD.
To explain, her name is Martine and when she was younger, she had had the nickname titi (pronounced tee-tee), because of the TI in her name.
So when I noticed, I laughed and said "Hello, titty chick!", and that was probably one of our first jokes.
Also, because my girlfriend takes French as a second foreign language in school, while most danish kids take German, I called her a frogsnapper for quite a while xD.