- Peanut Butter in a jar is a liquid
- Peanut Butter sandwiched between crackers is not a liquid
How can this be, you ask? Three letters: TSA, that's how. On the tragicomic blog, Taking Sense Away, a reader writes of an encounter at LGA:
... a TSA officer pulled a small jar of peanut butter from my wife’s carry-on and told us we couldn’t take it. ... , at the end of the conveyer belt on top of my suitcase, I opened the saltines, the peanut butter and the knife and made a bagful of peanut butter crackers.
Evidence not only of the miraculous nature of peanut butter, but also of the ongoing wonder that is the modern sandwich.