Does this mean that we no longer need to wipe our ass after taking a dump if we wear this underwear? LOL.

This is funny, I thought nano technology might be applied in less mundane situations than underwear - though I guess in the military and aerospace these are issues of highest importance!
Socks should be next and might be a great boon for ridding us of things like toenail fungi and athlete's feet?
How about nano toothbrushes? Far easier than flossing!

First a few things use nanotechnology. Then, everything uses nanotechnology. Then the robot uprising. Be afraid of your underwear.