I one time forgot to pin the quilt top before quilting. The sad part was it was a quilt top my DD 14 made for one of her Sunday school teachers. I was finnishing up the quilting just before church and not till I was done did I realize the back was sewn and attached to itself with 2-4 inch folds all over. The top looked wonderful but the back is a real night mare. The lap quilt was for the teacher's birthday and DD was determined not to go without it. I figured I would explain to the teacher and then take it home to fix it. The teacher however did not want to let go and still has it. She says she doesn't care and loves it. It still bothers me and it has been more then several years this happened.