The offending shirt, based on the 1987 film The Princess Bride, read: “Hello, My Name Is Inigo Montoya and I am here to kill you.”

Wynand Mullins wore the shirt on a Qantas flight to New Zealand when chaos erupted in the aisles. 

“The flight attendant said to me: ‘Are you able to remove it because some of the passengers are quite intimidated by it.’ I thought it was all a bit silly. The person next to me was laughing, because they knew the movie,” Mr Mullins said.

He didn’t have another shirt to change into, so kept the shirt on for the whole flight.

A spokesperson for Qantas said the airline had no record of the incident, but “Qantas does have dress standards for passengers travelling on our aircraft… particularly for slogans which other passengers may find offensive or threatening”.

Seriously, I’ve seen more offensive clothing on a RyanAir flight to Marbella.