(Why am I singing this to him? Because he doesn't know what baby songs are, and if I'm going to sing to him, I'd rather it be not something that makes my brain fall out. Turns out, he likes one-hit-wonders. Especially "Come On Eileen", for some reason.)
So, for example..
"You want it all, but you can't have it" is eerily appropriate for a baby. And "It's in your face, but you can't grab it" also fits, because he hasn't quite mastered the art of grabbing for things that are in front of him. (Right now, it's sort of a semi-random flailing..)