What’s a Geek thing?

Writing messages to someone by trying to access an inexisting path on his webserver. This results in an error which gets logged in the recipient’s webserver error log file.
Like http://yourfriends.webserver/HiFriend/I/JustWantedToAsk/IfYouComeOut/On/FridayNight/EOM

Don’t expect an answer very soon. Actually, don’t expect an answer at all.