My X Is a Y

For any real person or character living in a society, having friends, relatives, class/workmates, love partner(s), vehicle(s), weapons or tools is standard (unles you're a Hikikomori), but in this case, said friend/relative/partner/tool has an unusual twist which most of the plot is based on.

Can overlap with A Boy and His X. See also The Joy of X. Use with care.

Standard My X is a Y

 * My Horse Is a Motorbike
 * An essay on people's attachment to Cell Phones called "My Phone is a Part of My Soul"
 * My Wife is a Gangster, the Korean trilogy of films.
 * My Wife Is a High School Girl
 * Okusama wa Mahou Shoujo (My Wife is a Magical Girl)
 * Magical Girlfriend - My S.O. is a supernatural being.
 * Boy Meets Ghoul - My S.O. is an undead monster
 * My Teacher Is an Alien
 * My Best Friend Is a Vampire
 * Bewitched: My Wife is a Witch
 * Charmed is "Siskoni on noita" in Finnish, standing for My Sister Is A Witch.
 * My Gym Partner's a Monkey
 * True Lies: My Husband is a Spy
 * My Bride Is a Mermaid (in this case, the snowclone is only in the English translation, however.)
 * "My Dog is a Cat" by Dag Nasty
 * My Girl Is a Slut
 * My Stepmother Is An Alien
 * My Mom Is A Werewolf
 * The Boy Who Cried Werewolf: My sister is a werewolf.
 * My Girlfriend's A Geek (English title only)
 * My Parents Are Aliens
 * My Grandma is an Alien

My Other X is a Y

 * My Other Car Is an X is a subtrope.
 * My Other Car is a TARDIS
 * Team Fortress 2: The Sniper has a bumper sticker on his camper reading "my other car is a sword van".
 * From a promotion for Halo 3: ODST: "My Other Car is a Warthog". (See the license plate)
 * Roosterteeth sells bumper stickers that say "My other car is a puma", parodying the above example from ODST.
 * Futurama gives us "My Other Car Is a Porsche On The Moon".
 * Hot Topic sells wristbands that say "My other face has a mustache."
 * "My Other Phone Is A Boom Car" by They Might Be Giants
 * When Peter Griffin was turned sensitive towards women, he put a sticker at his car's bumper stating "My other penis is a vagina".