At 21 months, he's still not saying too much that's discernible as English. But his speech gets funnier every day.
Tom: "Sly, are you going to be nice to the new baby?"
Sly: "What's that?!" [said in a very excited squeal at least 10,000 times a day]
Me: "It's an iPod"
Sly: "iBop! iBop!"
Sesame Street: "This episode was brought to you by the letter X..."
Sesame Street: "...and the number 10"
(Well, at least he knew which was a letter and which a number?)
Anytime we finish praying the Rosary (and once, embarrassingly, right as Mass ended)
Sly: [very loudly] "YAYYYY!!!"