"Yass!"

Little Boy says "yass" instead of "yes." More like "yeah-ss." For a long time, he wouldn't say "yeah" or "yes" or "yup" or any of that--he'd just smile instead. Of course, he was still perfectly willing to say, "no."

But now, not only does he say, "yass," he says it with enthusiasm. Always. Like this:

"Do you want toast for breakfast?" "Yass!"
 "Do you love your bear?" "Yass!"
 "It's time to brush teeth." "Yass!"
 "Do you like putting your cars on the piano?"
 
  "YASS!"