A blonde Moment

So when Ryan's sister Becky was here she took a little footage of the twins singing a song about princesses getting married and dragons dancing forever, nothing out of the ordinary around here. The whole thing lasted two minutes and thirteen seconds as opposed to the usual thirteen hours and two minutes, so I guess they gave the Cliff's Notes version of the story.
Anywho, when Becky posted it on her blog, I was so excited to show the girls. Look! I said, you are on the computer!
L & M watched for a little while and vicariously raised their hands in a sort of timid wave. Then they both looked back at me, devastated.
What in the world could be wrong?
'They're not waving back!' they relayed, crushed.
I then realized...
They thought they were on ichat.