A threeby is a T shirt describing its wearer in a particular way.
I might put, for me, Marathon running, drumming, web developer. For my partner, Cat loving, bodyboarding psychologist.
There's a rhythm to it, a set of rules I haven't quite defined yet, but it seems like two ****ings and a noun. It's definitely not two or four things, so you may have to dig deep or be selective, and that's part of the fun of it.
It's a bit aspirational too, I'm not yet a marathon runner, nor is my partner a psychologist, but we will be in a few months. So in that sense if you're going to buy one for someone else you'll need to know them well and be up to date.
Anyway, you can have your own threeby printed white on a black t-shirt for £25, or on a mug for £15, delivered wherever, with a 2 week lead time.
Like the idea? Email me your threeby to john@johnallsopp.co.uk.