That breakfast scene had nothing to do with his birthday. He shaped the bacon so he would get carded & show his New Hampshire ID(fake?). They also specifically showed the tags on his car were also from NH. An alibi for an alias?
Dude, it was just a guess. Obviously I had no clue how it was going to end so I made a guess. It's probably the hardest show on televisions to figure out what would happen next, all the way from the very first episode. Jeez... However, my guesses were pretty close.
I fucking hated the ending! Walt dies wtf? And how can jessie live after violating the fundamental rule of the streets? NO SNITCHING! At least those nazi's got it and that bitch uptime chick too...