Not so much that if you met me for the first time, you'd be startled by the slippage, but enough that every damn pair of sunglasses I've ever owned sits funny on my face.
Usually they just sit lop-sided, which isn't SO bad in the scheme of things -- but this latest pair isn't content with something as boring as looking crooked.
Instead, every time I raise my eyebrows, they trap the left one. And then I have to 'shrug' it off the top of the frame.
Seriously. Problems of the first world, hey?