As another poster said you will need a bigger hole than you think. If you decide to go this route drill a hole in a scrap 2x4 to make sure you have a big enough hole to pass the cord through. Then go to the hardware store(s) to find the right plugs.

I would find a different section of wall and put a mail plug in a weathertight box on the outside and put a standard outlet on the inside. Probably label them so no one is confused in the future. Something like this, but built for a home, search page. Bring a picture to a big box or electical supply.

Put the male on the outside and a regular outlet on the inside - in the same stud cavity. Use proper size romex - cut it long so you can do all of the fishing with boxes out.

This will not be up to code, but will only be a danger when power is applied.