Title text:
If you want to see true audacity, do an image search for 'Altoona-style pizza.'
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3142/
I disagree with the claim that they are, as a rule, universally applicable, though I certainly do not disagree that this is highly US-normative. There is a significant subset of comics specifically about US issues, stretching back all the way to the very beginning. I can, upon request, provide examples.