If you commission in to the Air Force as a non-rated officer (not a pilot, navigator, air battle manager) you'll be required to serve 4 years active duty. Pilots are required to serve 10 years. Basically it would be 8 years active (2ish years for flight school, 6 years actually flying) then 2 years inactive........
Stumbling block. For other uses, see Stumbling block (disambiguation). A stumbling block or scandal in the Bible is a metaphor for a behavior or attitude that leads another to sin.
t-block. The act of getting cockblocked and teabagged all in the same night, by the same guy. Paul was really upset because at the party he was cockblocked by his friend, and then after he passed out drunk his buddy came out to teabag the shit out of his face. The next morning he heard he had received his first t-block.