Calvin's 4 month checkup

We had Calvin's 4 month check up today.  Where's the time gone?  He weighs 17.5 lbs, is 25 in long, and his head is 14 in.  I don't remember the exact % of them all I just know it's all above 75%.  He has gotten so big, it's like all of a sudden he's out grown everything.  He's wearing size 6-9 month clothes!!  He's rolling over, almost sits on his own and is just talking up a storm.  His favorite new thing is to give whoevers holding him a raspberry.  You would think with three other kids you wouldn't be so excited about the talking and cooing but when all the others didn't talk until well after a year this is big!!  I think it has to do with he's not a binky fan.  Heaven help us when he teeth's.