"Why is he sad?"

If you are forced to listen to top 40 radio then you've probably heard The Plain White Tee's song "Hey there, Delilah". Liam and I were in the car and this song was playing when he asked, "Why is he so sad?" After listening to the song a few seconds so I could remember what it was about, I said, "He misses his girlfriend." "Girlfriend? What's a girlfriend?" Oh crap! I'm sure I came up with a brilliant answer...or more likely I said, "Look, there's a digger!" or something like that in order the change the topic. This morning Liam was playing his guitar (he got a real one...with strings... for his birthday) when he said, "Watch mom, I'm playing a sad song." I'm not sure what made it sad compared to his other songs but I enjoy that he is feeling out the difference between a sad song and a happy song.