These sunglasses fit Mary’s face and do a good job of keeping road grit out of her eyes, but she doesn’t like the extended earpieces. So I cut ’em off:

The trick is to shape the ends with an ordinary diagonal cutter, then round the edges with sandpaper.
The lower pair has seen a few years of use, during which the bright yellow plastic faded quite a bit.
Nothing profound, other than that you need not put up with nuisances.