Poster Rebelrockstar shared the video of his pregnant wife with a belly button that appeared to 'pop' out, as she's heard laughing the background.
However, while the woman in question seemed to be in no discomfort, one viewer noticed something more sinister about the unique movement of the stomach.
'That actually looks like a hernia, if thats your wife please get it looked at asap. Today,' they wrote.
Initially, Rebelrockster responded saying 'First, thanks for the concern!! She is a MD though and its "normal". She actually has a space between the muscles in her abdomen from the last pregnancy - glad I'm a guy'.
But he later posted another update, after getting a second opinion, exclaiming 'You're right! She said it is an umbilical hernia! F*ck, Reddit should just be my doctor.'
Other users then began to share their own experiences with similar conditions, and offer advice about what can be done.
'She can have surgery to connect them again if she wants although I'm sure she already knows that. Over time it can make her belly look big and "pregnant" just because of the lack of muscle in place holding it all in. At any rate congrats you guys,' one explained.
'Wish I could suck my umbilical hernia in like that, the kids think it's a door bell and like to poke it,' another commented.
Umbilical hernias usually occur in children during their first year of life, but can also develop in adults, generally as a result of a weakness in the muscle wall. While at first they're generally just a physical symptom with no pain, if left untreated, they can get worse over time.
As one of the comments stated, umbilical hernias can be operated on, during a routine procedure that takes around 30 minutes, under general anaesthetic. This is usually a necessary step for adults with the condition, as their bodies are less likely to repair themselves as they age.
If you are concerned about an umbilical hernia in an adult or a child, you should seek medical advice from your GP.