The IT consultant was set to fly off on a business trip to Dusseldorf in Germany when he was pulled to one side. Mr Jayakody said the first guard started joking with him about the Transformers character depicted on his French Connection T-shirt.
'"Then he explains that since Megatron is holding a gun, I'm not allowed to fly,' he said.
'It's a 40ft tall cartoon robot with a gun as an arm. There is no way this shirt is offensive in any way, and what I'm going to use the shirt to pretend I have a gun?
Brad Jayakody & his jinxed shirt
He was cooperative with the supervisor and took off the the 'offensive' T-shirt, replacing it with another shirt in his carry on luggage.
A spokesman for Heathrow operator BAA said: 'If a T-shirt had a rude word or a bomb on it, for example, a passenger may be asked to remove it.
'We are investigating what happened to see if it came under this category.
'If it's offensive, we don't want other passengers upset.'
He said there was no record of the incident and the passenger 'certainly didn't make a formal complaint at the time.'
Source: This Is London