Awww kaun, i think you are a very loving son. Your parents must be proud of you :-).
I really love it when i see grown up kids not feeling shy in admiting their love for their parents. Cuz nowadays some people think its uncool to love yr parents or care for them. So i have high respect for you :-).
Don't miss the chance, call up yr parents n express what u feel. I'm sure they wl love it.