November 17th, 2010: This comic and all the eggcorns in it come from the wonderful Language Log and the eggcorn database. Language Log is one of my favourite sites, and rivals TV Tropes in the ability to suck you in for hours on end.
They made up the word "eggcorn" to describe these sorts of linguistic substitutions (where the new expression can be argued for, but seems to come from trying to deduce how the existing expression is expressed) back in 2004, and only a few weeks ago, the word made the OED with Language Log as a reference. That's basically amazing: congratulations Language Log! I'm still working on getting "chocochop" recognized (a chocolate pork chop with a real pork chop bone!)1.
1 My friend Pat invented them; they're great. One year ago today: okay, new question: let's say you can live inside any person in history – Ryan