I'm just fiddle-de-dee-ing.
When something makes him anxious -
Oooooooo, that makes my feet feel sweaty.
When he wants to change the format of his personal blog -
I'm just doin' some small tweakments to my blog.
When he's describing a recurring dream -
You know, that endlessly-falling-in-the-bottomless-black-pit-of-no-return dream...