The title of today's blog says it all! If you don't understand it then you need to learn "Charlie Talk".
First- "Almost yet" is "almost" and "not yet" put together. Like if you were to say "Charlie, are you ready to go to the store?" He would reply "Almost yet!" Or "Charlie, should we brush your teeth?" "Almost yet!" he would say. You should try using it sometime. It's kinda fun.
Second- "For a fillion minutes!" is an easy one to figure out. And I hear it probably a fillion times a day from my Charlie the barely 3 year old! So if you're taking too long to do anything at all you're probably taking a fillion minutes and Charlie doesn't have time for that!
The kid has got major SASS! And if you'd like a taste of it, you're more than welcome to spend a day with him.