Letters of the Day

Today's Letters of the Day are "D" and "A", brought to you by Jamie.
"D!" he says.
"D!" you respond.
"D!" he says again.
And so on.
Sometimes he throws in an "A" for variety.
He will also say them in lower case on occasion: "d!" (the difference in vocalization between upper and lower case calls for a trained ear; a "d" is more subdued than a "D").
And even more rarely, he will point to something and say "D". We're not sure if this is some kind of emphasis or an attempt at identification. The pointing thing is new... haven't seen him do that before today. Perhaps "D" is a very important letter and he wants to be sure we make note of it.