and I did it to myself!
I bought 110" backing for the wedding quilt I'm working on... and bought extra yardage for the outer border of the quilt.
So I thought I would be smart -- I would rip the fabric to separate the backing section from the border section.
I clipped the selvage and did my first pull... fine... okay. grabbed the two sections for the 2nd pull... and I don't know what I did... but it ripped perpendicular up into the middle of the backing section!!!!
So I finished the unwanted rip... then finished the incomplete rip and then sewed the two parts together. So much for having a seamless back on the quilt!
GRRRRRRR