Twenty-one-month update

Sammy turns twenty-one months old today--only a few more months to go before I have a two-year-old on my hands (eek!).  I know it's only been a months since the last update, but I really feel as though Sammy's grown quite a bit in both the physical and emotional sense since then.  He's saying "please" and "thank you" all of the time now and is starting to put sentences together.  Sammy loves to play hide and seek and thinks it's hilarious to jump out and yell, "Boo!"; this usually happens when I'm trying to use the bathroom.  Sammy also loves playing with older kids and often treats them like they're there for his own personal amusement, but fortunately they're usually happy to oblige him.

Stats:
I'm pretty sure he's grown a bit taller in the last month and am now thinking I need to go shopping for some 3T pants as Sammy's starting to look a bit ridiculous in all of his high-waters. Sammy also got a new pair of shoes the other week and is wearing a size 8 now.  Based on the following symptoms--drooling, chewing on his fingers (and anything else he can put in his mouth), and inflamed cheeks--I'm pretty certain he's cutting some of his two-year molars, but there's no way in the world I'm going to stick my finger in his mouth to find out.

New words:
Ouch, sorry, go, look, eat, light, bus, truck, milk, books, knock-knock, boo, notebook, "I don't know," "Where did it go," "I'm sorry," "This way," and last but not least, the oh-so-charming "I don't want it."

New tricks:
Assigning objects an owner--he goes around the house and points out the things that "belong" to mommy or daddy.  For example, according to Sammy, any and all tools in the house are mommy's (he's actually right); this trick can be somewhat funny as he usually employs it whenever one of the parental units is attempting to take something away from him; I guess Sammy's logic is that he can't give daddy the object in question if it belongs to mommy and vice versa.  Sammy also likes to "read" the letters that he sees; a while back I was changing his diaper in Target and he surprised me by reading off S, T, H, R, O and P from the warning sign on the changing table. Sammy has also started helping at bath time by putting on his own lotion and combing and brushing his hair. Sammy has "please" down pat and gets very put out when the magic word doesn't always work magically (like when he asks for Blue's Clues over and over again while saying "pleeeeeeeeeeeeeease?" and I've put my foot down because we've already met our quota of two episodes per day).