Pair implies two. I never put on two pairs of pants or two pairs of panties.
To the first guy Eyeglasses are actually two, think of a monocle. As to the pair of pants simple they have TWO LEG HOLES, same with underwear. So people just decided to go with calling them a pair.
what about a pair of eye glasses?
the garment goes on a pair of legs a pair of buns and has 2 leg holes. doesn’t make sense but there you have it.
To the first guy Eyeglasses are actually two, think of a monocle. As to the pair of pants simple they have TWO LEG HOLES, same with underwear. So people just decided to go with calling them a pair.
what about a pair of eye glasses?
the garment goes on a pair of legs a pair of buns and has 2 leg holes. doesn’t make sense but there you have it.