You’ve heard the phrase “like nailing jelly to the wall†to describe a difficult task. Graeme Cole decided to find out exactly how difficult it was to nail jelly (or Jello for Americans) to a wall. He chronicled his experiment step-by-step with pictures. Link -via the Presurfer
Update 2/8/07: MyScienceProject has more about nailing jell-o:
Our further investigation into this area leads us to state the following: Jell-O can be effectively nailed to a wall if you increase its density by reducing the proportion of water to gelatin in the recipe, or fortify it by adding more gelatin powder.Link - Thanks ebez1
I worded it that way because it was mentioned at the website, to explain exactly what he was using in this experiment.
I know it is the Queen's English and all, but how do you know this phrase isn't of American origins? If it is, well... Jelly is *jelly* here, not Jell-O(R). Maybe you call it jam? Whatever. The point is, it'd be nigh impossible to nail it to a wall... far more difficult than the relatively solid in comparison Jell-O(R).