The phrase "idiot proof" means making something so simple and easy that even someone who is not very smart or experienced cannot mess it up. Full definition
Since most equipment these days is made pretty idiot proof I expect it wouldn't just blow up from the extreme RPM, but what would happen? (mechanics.stackexchange.com)
The juices are numbered 1 to 6 (totally idiot proof). (health.com)
A Target Date Fund will automatically adjust your portfolio as time goes on, making it almost idiot proof. (thebrokeprofessional.com)