Rob's tweeting ... what to expect?

Ok! we've been waiting for Rob's tweet ... honestly I had no idea what to expect from a "Rob's cameo" on PFatch's twitter. Rob's fans are divided between their anger at what felt like a shut off comment on Rob's part and the cuteness of the fact that he tweeted at all.
The question would be what did we really expect Rob to say? and what exactly would he say and would actually be satisfying for us hungry famps?
any thoughts?