Jack amazes me!

Jack turned 19 month old yesterday! And today... He COUNTED!
At his Dr. appointment 2 weeks ago the Dr. told me that most 18 month olds have about 10-12 words. Jack has at least 40, and he learns new words everyday. My little sponge is starting to repeat everything, or try to. He isn't just saying small words like Mama or ball anymore, he says things like pocket, button, monkey, outside, Brigette. He also knows all of his body parts and animal noises.
Today my parents, who Jack calls Nana and Bobo, took him to the playground. They were climbing the stairs to get to the slide and Bobo was counting them as they went. Jack repeated him each time. There were only 6 stairs and after Bobo said 6, Jack said "seben"! EVERY time!!! And later while I was changing his didee(diaper) I started counting with him. I said 1 expecting him to repeat it, but he said 2! I said 3 and he said 4!!!
I just can't tell you how proud I am of him!! I can't believe how fast he learns things. He just amazes me everyday.