You don't have to be a 'rocket scientist' [=you don't have to be unusually smart] to understand the instructions.
Sales 'rocketed' from 1,000 units last week to 5,000 units this week.
The job is challenging, but it's not exactly 'rocket science'.
(..) Now, show me my nuclear weapons! I can't wait! I can't wait! This is the Beard of Doom rocket? This is my weapon? I will be a laughingstock! All my friends have got nuclear weapons. Even Ahmadinejad! (..)2012 The Dictator