Back in the early 2000s I had a job that required me to enter a certain phone companies' datacenter. But, I couldn't, because I was a consultant and it was an employees-only area. I had permission to make changes to machines in a rack but they didn't allow me to enter. There was a guard who would check badges but who didn't really check if he recognized people, and there were some people who had to enter and leave multipel times in a day. Myself, I couldn't get permission to enter via the correct channels.

With my director's unofficial approval I was allowed to _try_ to enter the datacenter. So I just walked very confidently towards the entrance, nodded to the security guard like all of the regulars who didn't bother showing their badges, and he let me in.