This is the funny moment when a young Arsenal fan declined to take a picture and even refused to eat the cake at his friend's birthday party because it was Chelsea-themed.

Roman Zegay, six, is a huge Arsenal fan and was less than impressed when he showed up at his friend's birthday party at McDonald's in Brixton, London.

The birthday boy had a Chelsea-themed cake and Roman was having none of it.

Roman's mum, Devora Zegay, 29, asked her son to pose with his friends for a picture but he refused because of the cake.

A video shows Roman asking his mum if she would delete the picture if he agreed to take it.

Roman even went a step further and refused to eat the cake because it was Chelsea-themed.

Devora, from London, UK, said: "The birthday boy is a Chelsea supporter while my son is an Arsenal supporter. "

"I asked him to take a picture with the birthday boy but he refused because of the Chelsea cake and didn't want to be seen in a picture with it."

"He also then refused to eat the cake as he didn't want to be ‘disrespectful' to Arsenal."

Roman eventually agreed to be in the picture, but he didn't look happy about it.