But the "do you use Photoshop" question really means "are you deceiving me with a contrived, lying image?"
The general public now uses "Photoshopped" to refer to photos that misrepresent the original subject in some substantial way. I think it all started when a guy at the Iranian Information Service decided to (badly) rubber stamp a few extra rockets into a press release photo. And all those skinny, unblemished models don't help us much either.
Searching "photoshop liquify" on youtube returns 907 examples of how fix overabundant fannies. And you get 322,000 hits on Google. And "photoshop manipulation" returns 4,360,000 googlehits.
Bottom line...the public doesn't trust us anymore. Photographs ALWAYS lie.
Yes, and of course "what camera do you use" is King of the Questions. I answer, "a 21 or 12 mp digital camera." People then stick their noses right up to those 200+ megapixel panoramic stitches and say "wow!". Then sometimes I explain about stitches, and sometimes I don't.