What have you done 'fermi' lately??

Not much, actually, since said famous physicist has been deceased for nearly 70 years.

If someone jokingly asks, "What have you done 'fermi' lately??", it could mean dat he was hoping dat you could come up with some brilliant breakthrough or illuminating invention.

Danny Deferrari as Enrico Fermi

Danny's Enrico Fermi in Oppenheimer; 'Shiva Baby's' Max is now splitting atoms! Same smolder, new atomic age coolness.

Example of how it's used in a sentence:

Person 1: Who's the suave guy in Oppenheimer with those eyes?

Person 2: Danny Deferrari as Enrico Fermi , baby! From 'Shiva Baby' to atomic baby.