Generic form of "first world problems"

The term "first world problems" refers to a petty thing complained about by someone living in the upper or middle class.

Is there are word or phrase that means problems or complaints about things that you have relatively little to worry about compared with others (especially in front of those others).

For example, a straight A student complaining about getting a B on a difficult math test that almost everyone failed.

There's the term world's smallest violin, which is used to express mock sympathy.

In conversation, it's often accompanied by a hand gesture, as if someone is playing a miniature violin. For example, to that "A" student complaining about his B on the math test, I could say something like:

Aw, that's a shame. Here's the world's smallest violin, playing I Feel Sorry for You.

The website TV Tropes says this about the gesture:

A predominantly Western gesture, the World's Smallest Violin is given to a person who is exaggerating the sorrow of his/her predicament in order to gain sympathy; the person who does the giving presumably has none.

Wikipedia mentions it under a list of hand gestures; the page there reads:

World's Smallest Violin (also called "How Sad" or "World's Smallest Violin Playing Hearts and Flowers") is made by rubbing the thumb and forefinger together, to imitate bowing a violin. This gesture is used to express sarcasm and lack of sympathy, in response to someone exaggerating a sad story or unfair treatment.

Another (more brief) way to express such mock sympathy would be:

Oh, “Woe is me!”

I put the quotation marks in that sarcastic remark, because if I said “Woe is me!” in that vein to the B student, I would be putting those words into the student's mouth.

As a noun, you can consider trifle.

A trifle is something that's totally unimportant. If your friend is freaking out over which shoes to buy and you call her dilemma a trifle, you're saying she shouldn't get so worked up over nothing. [vocabulary.com]

or fuss.

an expression of anger or complaint especially about something that has little importance [MW]

Fuss is a verb also, same as to make a fuss; make much ado about trifles/nothing.

to complain especially about something relatively unimportant. [dictionary.reference.com]

Whine:

1.3 A feeble or petulant complaint:

ODO

White Whine:

A collection of first-world problems
Updated daily

The worst part of car shopping ... I have to call the sellers. Ugh.

A coffee mug that is too big for any of your cup holders is a total nightmare...

Whitewhine.com