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'.
(..) - What are you doin'? You'll see. Come on, be here. - Oh, yeah. - ''I put my hand in his pocket--'' '' Never wanted more than a rocket!'' It's Red! - Maddy, it's Rita! - Yeah. - Can you talk to her? - Hold on. Hold on. (..)1996 Foxfire