Hello, Uncool Moms? Can we talk?

It happened.  It finally happened.  I am starting to get behind in "what's going on in my child's brain" and being uncool by not knowing everything.  The first time was at a bookstore....

After a nice peaceful meal at a restaurant (read: all 3 were hungry), we walked around downtown Palo Alto to walk the dinner off and went into Border's on our way to our car.  The younger two were listening and dancing to Queen (my choice) while C walked around the "newer" CD section.  He came running up to me, all excited, and said,

C: Umma, I want to buy Corbin Bleu!  He's got a new CD out!
Me: Corbin who? 
C: He's in High School Musical, Umma!
Me:  Huh?  What's High School Musical? 
At this precise moment, his expression altered and my heart dropped. 
C: YOU don't know who Corbin Bleu IS?!?

Another bigger THUD as his expression went to Incredulous, Mommy-doesn't-know-what-I-know look.

At that precise moment, I found myself empathizing with my mother.  So, the next day, I am back at Border's buying the said DVD and another DVD that S (5 yr old who luuuuvs Hannah Montana) wanted.  After watching both DVDs, I feel even more behind so I program out Tivo to include some of these for the kids.  Feeling like I have mostly caught up on the mother-to-a-preteen class, I relax.
Too soon.

The summer camp has given C and S backpacks (for swimming suits, towels, lunches, etc.) so I put pink strings on S and light green strings on C.  When I proudly showed the backpacks on the morning of the camp, S was bouncing with excitement and loved her new pink bows on her backpack.

C, however, had the "Oh, sheesh, how do I tell her this" expression on him.  Doh!
Immediately, I realized my mistake and pulled off the string from his backpack. 
Happily they climbed into the car and we were off to the summer day camp; grumpily, I went to work thinking how many more times this will happen (how high can I count?!) again.

I've become my mother.  I'm out of touch.  C is no longer influenced by what I say and is listening more and more to what his friends are saying (about what's cool!)

C is growing up faster than I am prepared for. 

Is this a losing battle or if not,

HOW do I stay on top of it so I don't star in another Uncool Mom episode?!