Paul Erdos and Terence Tao in 1985. Tao would have been 10 years old or so. (From Tao's G+ feed.) Tao is possibly SMPY's most famous alumnus, although I am not 100% sure.
Children were referred to as "epsilons" (because in mathematics, particularly calculus, an arbitrarily small positive quantity is commonly denoted by the Greek letter (ε))
Women were "bosses"
Men were "slaves"
People who stopped doing mathematics had "died"
People who physically died had "left"
Alcoholic drinks were "poison"
Music was "noise"
People who had married were "captured"
People who had divorced were "liberated"
To give a mathematical lecture was "to preach"
To give an oral exam to a student was "to torture" him/her.