You all had such good ideas about where my pants could be that I'm embarrassed to admit where I actually found them.
They were on top of the dryer.
I'd washed a jumbled up load of twin clothes and my clothes, and most of the twin clothes were winter things that were to get packed up and stored in the basement, where the washer and dryer are. So when I pulled the clothes out of the dryer, I put the stuff that was going to stay in the basement on top of the machine.
Somehow my jeans were in that pile of stuff.
Yay! Now I know what I'm wearing to work tomorrow.
And to Anon. who said that if she couldn't find her pants, it would probably be because she was wearing them: I can't tell you how many times I have lost my glasses . . . on my face. Yeah.