Still, you think they would have the brains to ask you to remove the nozzle and look inside, realize it is rubber, and tell you to have a nice day.
Unfortunately, in many lines of work, having brains is detrimental to remaining employed.
Much like the aforementioned blower, management is likely to consider such a person dangerous. ("They think too much, they could embarrass me, perhaps even put me out of a job.")
It's actually pretty standard employment policy at many if not most mid-sized and large companies, and almost a certainty at government agencies, not to hire a person that's too intelligent for the task. The reason is that they are seen as ones who will spend most of their time figuring out ways to do their job better, faster, more efficiently or, heaven forbid, maybe even give improved customer service, instead of doing only what they were asked.
I'd like to think that's the reason I never got called back after job interviews and why I became a photographer!