There's the right way to eat certain types of food. And then there's the wrong way.
Particular products come with unwritten rules - and it can be anxiety-inducing when they're broken.
Watching someone nibble a burger whilst spinning it 360 is one example, or spotting a snacker chomp down on a Kit-Kat without breaking off the bars, leaving it to resemble a chocolate-covered pan flute.
But Greggs might have just produced the biggest dining violation of all time with their image of a sausage roll bitten straight down the middle.
"What feels illegal, but isn't" has been trending on Twitter in recent days... and the beloved bakery has chimed in with a humdinger of a response - which has gotten the internet unsurprisingly riled up.
Some users responded with blunt single-word Tweets such as "blocked" and "reported", whereas other users called the post "illegal".
We've never seen a sausage roll eaten this way before and we never want to ever again.
Kill it with fire.