First question

i had a dream about cracking eggs into my roommates' hair. what does it mean?

First of all, I know shit about dream analysis. I want you to know that. Second of all, did you have a glass of warm milk before going to bed? And lastly, I am assuming you are talking about both of your roommates here.

I'm willing to give couple of answers:
1) Maybe their hair looked very, very dry and brittle so you were overcome by sudden urge to give them egg pack. Or maybe you are jealous of their lustrous hair so you egged 'em to show them so.

2) Yours truly did little googling for you to see if there were anything out there about cracked egg. Here is what I found:To see cracked or broken eggs in your dream, denotes that you will suffer from many disappointments and misfortunes. It is indicative of a fragile state in your life and feelings of vulnerability. Alternatively, you may be breaking out of your shell and being comfortable with who you are.

If I were to be mean and bitchy, I will say that by you cracking eggs on your roommates hair, you are feeling that aforementioned two will be bringing disappointments and misfortunes into your life. However, since you are the man who came up with the title "All Seeing Ai", I will tell you that by living with those two people, you have learned more about yourself and you are coming out of your "uber nerd" shell. Maybe you only dreamed about this now and not earlier because you know you are preparing to leave in less than a month and your inner-self has started to recognize the change within.

3) It means you really wanted to make bacon and eggs for them and for you. yumyum.

Just choose one interpretation and move on. You will be happier.