Anyway, last week I decided to try to make them wearable so I took some time stitching the zipper together. It worked and they zipped; it even seemed pretty sturdy. I wore them earlier in the week (with a long shirt because I was paranoid) and they were fine. I guess I just tempted fate too much, because when I tried to zip them up at work today, my excellent craftsmanship failed me and my zipper was busted. The zipper of my pants was busted 5 minutes before I had to teach a class. I frantically pulled safety pins out of my purse. First I tried to pin inside my pants and be discrete, but that wasn't working so I just pinned across. I pulled my shirt down as far as I could (thankfully I wore a long shirt again because I was still paranoid) and hoped for the best.
Yeah, so I taught a class (pretty darn well given the circumstances) with safety pins holding my pants closed.
Lessons learned: Don't just pull stuff off the sales rack without examining it and making sure that it is okay. Also, don't have so much confidence in shoddy sewing skills.
I know that I could probably have a tailor fix them, but anytime I've brought clothes in with a messed up zipper, I never got it fixed because the repair cost more than the item was worth. Plus, I don't know if I could ever love these pants again when I remember the horror of realizing that the zipper was broken at work.