A super-uncomfortable and/or tacky-looking uniform that you are being forced to wear against your will because "it's the proper/expected thing to do" on that occasion.
The teacher made me wear this ridiculous tight 'n' starched poutfit to the high-school graduation, whereas I wanted to just "dress casual and comfy" so that I could truly enjoy my "great moment". Not only did I sweat like nobody's business and feel like a total dork in that horrid garb, but nobody else even seemed to notice or appreciate my appearance all that much, anyway, and so I seriously doubt if they would have truly minded if I'd merely thrown on a nice shirt and ironed jeans.
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.