There's a book for this and all, but I know an extra way to annoy Britain, Germany, and Romano! >:D

....

NICKNAMES.

Mental Me: Ay, Roma-min!

Romano: Don't call me that, you bullsh*t!

Mental Me: *fake cry* Waa, Big Doggy, Big Doggy, Roma-tan's being mean to me~!

Germany: Don't call me "Big Doggy!"

Britain: What kind of bloody nicknames are those?!

Mental Me: WHAT ARE THOOOSEEEE (I just say it without any significant meaning)

Britain: =_=

Mental Me: ≧◔◡◔≦ Come on, Otou-sama, smile!

Britain: *annoyed* *evil smile*

Mental Me: OvO *throws pasta wheels everywhere*

STOP ME BEFORE I MAKE MOREE