Under the Tree

There are 8 presents under the tree
And not a single one is for me!
There are 12 presents under the tree
And not a single one is for me!
There are 15 presents under the tree
And not a single one is for me!
There are 24 presents under the tree
And not a single one is for me!
There are 37 presents under the tree
And not a single one is for me!
It’s Christmas Eve,
Oh geez!
What did I do?
I bought presents for you!
There are no presents left under the tree
I guess I can’t read,
17 were for me.