How did this happen?

How did it happen that our little baby now seems like such a big boy??  

I swear just a few weeks ago he was just saying 2-3 word phrases and now he is up to 4-5.  We have no problem understanding what he wants and when he wants it (we do have to interpret for others every once in awhile though!)  His stubborn/independent side is definitely blossoming which basically is a nice way of saying when he wants something he will definitely let you know and it can be challenging to change his mind.  He definitely has some favorites right now such as the "march" song on one of the cds in the car (cd #2, track #14 to be exact) and he will say "march, march" and then "Daddy/Mama sing" so we all have this song memorized and listen and sing to it repeatedly!  His sense of humor is in full swing as he loves "scaring" Daddy and when he sees either of us laughing he just glows!  He is still such a sweet little boy though and I always melt when he will just lean over and give me a kiss (which happens often when I'm reading a book to him) or if I am sitting on the floor he will come over and hug me around the neck from behind.  Everyone says once they become a big brother or big sister they seem even bigger so we are really trying to enjoy these next few months when he is still our baby!!  Love you little buddy!