Instead of saying "Je m'appelle" (French for "my name is") Canada sometimes accidentally says "Je maple" and does not notice until some points it out. He instantly becomes flustered and tries to change the topic.

//Came up with this one on my own and I really love it. I mean, just imagine cute little Matthew saying "Je maple" and then start to blush and stutter when you point it out *dies from all the cuteness*//