Munchkin

[from the squeaky-voiced little people in L. Frank Baum's 'The Wizard of Oz']

n. A teenage-or-younger micro enthusiast hacking BASIC or something else equally constricted. A term of mild derision -- munchkins are annoying but some grow up to be hackers after passing through a larval stage. The term urchin is also used.

See also wannabee, bitty box.