this old man, he played ten XD

He played knick-knack on my thumb xD Eleven

you did it out of order! >O no 12 for you!

That is the order I learned though.

This old man, he played one,
He played knick-knack on my thumb;
With a knick-knack paddywhack,
Give the dog a bone,
This old man came rolling home.

Thirteen~ xD

yeah and the number comes /before/ the song fourteen

It does not fit into that verse though xD so I just stuck it after

Fifteen

Sixteen candles

Seventeen going on Eighteen

Eighteen

Nineteen

Twenty

Twenty-one

Twenty two

Twenty-three

24

Twenty-five.