Acronym Soup: GTBOS ?

Questions

'we can't sing. we can't do anything. we're just having a good time'?

what did the title of joyce jillson's rebuttal to real men don't eat quiche say real women don't do?

what smash 1971 tune ran eight minutes and 27 seconds?

what 1936 quasi-documentary has been known as tell your children, doped youth and love madness?

who was the leader of czechoslovakia when the russians rolled in, in 1968?