Maybe I can help. I studied translation for several years (

): '"I am not satoshi" sounds great but it would be even better if completed with a second sentence saying "... but I am a bitcoiner" (likely on the back of the shirt, I guess)'.
I think saying I am a bitcoiner is redundant, the shirt is for bitcoiners. I have seen this shirt in a few places. It's a very old idea, not mine.
https://bitcointalk.org/index.php?topic=13941.0 Some good suggestions here I will check them out , thanks.