If you don't know what an eggcorn is, which I wouldn't be surprised at unless you're polyhymnia, you can find a definition here. Another one of those linguistic/usage quirks to go in the company of malapropisms, spoonerisms, puns, etc. (Well, in the way my brain categorizes things.) There are (lots) more articles about them here.

And because I'm obnoxious like that, I'll post some examples of them from time to time. Found one the other day, but I unfortunately can't remember where it was. But, today's comes from the House fora at TWoP, where one poster said: "They'd just assume let you miss it." Although, it doesn't exactly make sense. So maybe not an eggcorn but a simple error in translating from spoken to written word. But still, amusing.