1.) A derogatory word and insult to refer/
call someone who is often of low IQ, implying there is nothing in their
head2.) Used to describe members of the Military due to their haircut and
head shape
Person 1: That
guy couldn'
t even get 1 of the 10 jobs he applied for
Person 2: He's a real jarhead for sure, good thing he
still has the Military