1)noun(Proper)Future Scientists of America. An elite organization of students clad in bright red FSA T-shirts who, according to their overlord Mr. Nakaue, are destined to rule the future world of Science.
2)interjection. Used to express enthusiasm for either success of failure in anything vaguely related to science.
3)verb. A codeword referring to the act of stalking.
1) "In this room are the Future Scientists of America."
2)Teacher: "...And Woodbridge did not win any medals at the CA State Science Fair."
Students: "FSA, bitch!"
3)"We should totally FSA tonight."