Canada puts his canon perceptual invisibility to good use, and snoops on other nations' sex lives, the kinkier, the better. I bet he has tons of useful blackmail material...

Bonus: He masturbates while he's watching.

Bonus 2: He isn't in a relationship with anyone. He just loves watching. A lot.

(I figure with all the rapetruck!Russias, bastard!Americas, evil!Englands and horrible!Frances around, the meme can stand a Creeper!Canada or two. ;-)