The unusual complaint took people by surprise (Image: Getty Images)
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Even the most low-key host often feel pressured to get their children's birthdays just right.
For most one-year-old children, they're happy with the cake and a cuddle.
But one mum went viral on Reddit after complaining about an very odd issue with her mother-law.
The rant – nine months ahead of her daughter's first birthday party – left people reeling at the woman's concerns.
She wrote on Reddit: "Since I have known her (7 years at least) my mother in law has had a habit/tradition of saying "cha cha cha" between line of happy birthday during any family members birthday song.
The woman's post went viral
(Image: Getty Images)
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"She is the only one that does it and I believe she looks at it as "her special thing" that she does during birthdays.
"The thing is that I really don't like it.
"Not only is it annoying, but it takes the attention away from the birthday person and onto her every time she says "cha cha cha".
"I put up with it because I am only one of many at these celebrations, and its a fleeting moment that goes by relatively quickly.
"So…my daughter is almost 3 months old and is 9 months away from celebrating her first birthday.
"I am currently overcome to an obsessive degree with anxiety over the impending "cha cha cha."
"I know that I and my family are going to be subjected to on my daughters first birthday…and all following ones.
"My MIL a sensitive person who may not always respond to critique or comment in a rationale way, so I am afraid if i told her to stop the "cha cha cha's" specifically for my daughters birthdays, she would take it as an affront to her.
"That being said, I don't think I can stand the "cha cha cha" during my daughters special day, which is about her, not my MIL or her "cha cha cha". I feel compelled to say something."
The post racked up thousands of comments – with lots of people urging her not to say anything.
One person wrote: "I don't blame you for finding it annoying.
"But I think it is kind of a stretch to say the "cha-cha-cha" thing is stealing the birthday-person's special day.
"And I don't think it's a hill worth dying on or starting drama over so I'm gonna say YWBTA if you tried to stop her.
"She's just trying to show her love, and it's inconsequentially obnoxious."
Another commented: "This is so petty."
A third agreed, adding: "You are worried about something so small and unimportant that will happen in 9 months.
"That's ridiculous!! It so small. Get over it. So petty."
What do you think the mum should do? Let us know in the comments below