As two rather large countries, i've read multiple fanfics where Americas dick is bigger then Canadas.
But nonono. Ha.
Canada is at least x2 bigger.
Edit for people just tuning in, this edit is well over 5 years past when this was posted;
No I dont ship amecan. However I dont believe its incest if people decide to ship it because none of the countries are related by blood. I personally dont care if anyone ships this but I dont. Also saying the same joke over and over again isnt funny, please read the room. Also note I was like.....16/17 writing this entire book thing, please cut me some slack. Thanks.