I hate being treated like a helpless, doddering old fool.

[MIButterfly]

6. I thought the image of someone shaking a cane and calling someone a whippersnapper was amusing.

Not only because it's a stereotype of an old person, but who has used the word "whippersnapper" in the last 100 years?

But I am sufficiently chastised and will think twice before I post anything from now on.

By the way, I wasn't angry at the kid, I was frustrated at his "mansplaining" to me about how to insert a membership card I'd inserted a hundred times before.