What is =dd?
1.
A pointless and highly obnoxious smiley. It's most likely that it originated because some idiot on an AIM convo made a typo and made to D's instead of one on their =D smiley. So now, every idiotic AIMer uses =DD as a spacefiller. A replacement for "lol" or "xD".
Person 1: I went to school yesterday.
Person 2: =DD
Person 1: ...fuck you.
Person 2: =DD
See