You want me to pick up waffle cones? Oh, right, for the wine. One sec, let me just derive your son's credit card number and I'll be on my way.

"Principle of Explosion", by Randall Munroe, licensed under Creative Commons Attribution-NonCommercial 2.5 License

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You want me to pick up waffle cones? Oh, right, for the wine. One sec, let me just derive your son's credit card number and I'll be on my way.