Take Away the A by Michael Escoffier. First of all I love ABC books, I could collect ABC books forever (and I probably will). Secondly, this book is the kind that makes your mind tick. After reading it to my 7 year old the other night we stayed up making words into new words… If you take the R out of Frog, he's left in the Fog. If you take the M out of Lamb he works in a Lab. If you take the R out of Carp, he's wearing a Cap. It's such a fun game!!! (Just Whitney's style, I bet she'd be a master at playing this game… whereas I really have to think about it. But still, it's fun for me too.)
It's a good one! Find yourself a copy and have fun figuring out riddles of your own.