It hasn't even been two months since Conan O'Brien joined Twitter, but now the former Tonight Show show host is dropping in on Twitter HQ like he's part of the family.

Twitter employees are now tweeting en-masse about the funnyman's visit to Twitter's San Francisco offices this morning — he's even doing a bit of stand-up. His recent embrace of social media has been working out pretty well, and likely helped him land a new late night show on TBS.

We're not surprised he's at Twitter HQ. Conan is in town this week for his "Legally Prohibited From Being Funny on Television Tour" tour.

In proper Twitter fashion, here are some Twitter pics, courtesy of TwitPic, Yfrog and Twitter's employees:

















