My hobbies are photoshopping human legs on birds and building miniature furniture. I don't go bragging about them and saying 'I'm working on my hobby' will suffice.
You have been waiting until the last minute. This is the last minute. Tell them.
Madness string 93676
Once you believe someone has magical powers, you start to fear them, and question their good intentions. Thus, no matter how good a geek's intention, it'll seem like evil black magic to prosecutors and juries.