Somebody-elsie 

1. The opposite of a selfie
2. When someone else takes a photo for you

Hey man, I can't get the right angle for my selfie, can you take a somebody-elsie for me?

Somebody-elsie by SubwaySandwich October 17, 2022

somebody else's trouble 

Steve used to say it ain't hard to get along with somebody else's trouble, as long as fate is busting someone else's bubble, you'll be just fine.

It ain't hard to get along with somebody else's trouble.

somebody else's trouble by I, Wreckerrr April 14, 2021

somebody else's problem 

(n.) a device which allows you to render an object invisible if no one expects it to be there, as seen in the Hitchhiker's Guide to the Galaxy

"An SEP," he said, "is something that we can't see, or don't see, or our brain doesn't let us see, because we think that it's somebody else's problem. That's what SEP means. Somebody Else's Problem. The brain just edits it out, it's like a blind spot. If you look at it directly you won't see it unless you know precisely what it is. Your only hope is to catch it by surprise out of the corner of your eye."

somebody else's problem by three newtons February 16, 2004

somebodyelsie 

A picture taken of you by a person that you willingly give your cell phone to even though you have no idea who they are.

This somebodyelsie is way better than any selfie I could have taken.

somebodyelsie by Newfmom January 28, 2017

Somebodyelseism

The philosophy in which it is always an ambiguous "next person's" responsibility to take action in a given situation.
However, by failing to take personal action, one unwittingly reduces the probability of any action occurring, similar to the "paradox of voting."
A driving force behind the presently lowering trust in western societies, especially in the United States.

The omnipresent philosophy of somebodyelseism has convinced many individuals to avoid taking personal action in the belief that another individual will soon come along and address the situation.

Somebodyelseism by Strangefacade September 15, 2023