Something's in the water

In general, I’m pretty tolerant, until I’m not.
 I hate scoffing.  It’s one of the most common reactions I get either from customers or from my family.
The Scenario is as follows.  I’m asked a question,  where something is, or how it works, and then “the look”, either of disbelief or indignation.
Why then do people ask, I query to myself knowing the answer is that it  gives them the opportunity to discount or show disdain for the result.
And that is how they justify not having taken the time or energy to find it out themselves.
 Fuck that noise.