I don't care about the lyrics and I don't think about them when I sing. I think music is best when instrumental. I don't know if I understand the lyrics or not, or am I just having some literally thinking problem here.
It's like, I don't understand why a song must have lyrics, but I do understand what the lyrics mean if I start analyzing them.
It's funny, that when I sing, I remember all the words but I don't think about them and they come out like some string of numbers, but yet those who listen to me say I really get into the meaning of song. Hah. It's not that, I just get in to the music, melody, harmony, rhythm. 
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"All the world astounds me and I think I understand
That we're going to keep growing
Wait and see"
Mooby blues: Melancholy man
(Feline is Not-native Englishspeakker, excuse my freaky grammar or någonting)