They're both famousish people--both late-night hosts, I think? (I'm really not up on that sort of thing.) It's almost like the following dialog happened:

"You should tweet!"

"Uh uh."

"Amanda does it!"

"...Okay."

"You should follow more people to make it seem like you're not just stalking Amanda."

"Oh, right. Let's see... Jimmy Fallon, yeah. And... hmmm... there's another Jimmy... oh, this is too hard."

*grins*