Here's my attempt at it. The pattern is deliberately vague, with no gauge since you should be able to personalize your ugly doll. The doll is crocheted in a spiral, with no ss at the beginning of each row, so stitch markers are recommended.
*Make a chain about 1/4" or 1/2" (this will be the width of one foot).
Turn, sc in the outside loops of each st (don't skip any from hook), 2sc in end of row. Turn so that the outside loops become the inside loops and continue sc in each st back down the line , again with 2 sc in the st at the end of the row.
sc in each st to form a tube, until it measures about 1" in height.* Cut off. This is one foot.
Repeat from * to * to make the second foot. Do not cut off. Join to the first foot with an sc, and continue sc in each stitch to form the body. Continue making the tube until you are ready to add a tail.
When you reach the spot you want to attach a tail, make a ch the length of the tail. sc in st back down the chain until you reach the body of the doll. **Cont sc in each st of the body until you get to the tail again.** sc in each stitch along one side of the tail until you reach the end. turn, then ss both sides of the tail together until it reaches the body. Tail finished, do not add stitches to the tail-chain when crocheting the rest of the body. To make a thicker tail, repeat ** to ** more times. To make a curved tail, skip a stitch or make two sc in one stitch on one side.
-Arms- sc in st to make the tube body until you want to add arms. Add arms using the tail method. Remember that both arms need to be added at opposite sides of the same row if you want them to be the same height up the body. Add as many arms as you like, or none at all.
when arms are done, cont. sc in st to form a neck. To make a tapered neck or head, skip sts when you turn your work to go back down the line.
If you don't want ears, skip ahead to finishing off the head. Crochet until you get to the midpoint of the head (center of the forehead). Turn and sc in st back down the half of the head. Dec at the end of the row will give you triangular or curved ears, inc will give you wider ears etc. Cont crocheting in the round until you get the shape and length of ear that you want. Cut off yarn and hide end. Stuff the doll through the hole at the base of the other ear. Attach yarn at the edge of the hole, and crochet another ear.
-finishing off the head-
Stuff the doll, then press both sides of the tube together. SS both sides together. Doing this from side to side will make a flat looking doll. Doing this with the seam running down the middle of the forehead will give the doll a misshapen, mohawkish look.
Hope you have fun with your freeform crochet.