This young man was living in blissful ignorance thinking that his favourite t-shirt was a loving gift from his former girlfriend.

Wearing the white t-shirt with the word 'bhenchod' emblazoned across his chest, he hit Las Vegas, believing he was proudly telling the world 'I love you' in Punjabi.

However, after bumping into a man of Asian heritage, he was swiftly brought down to earth, as he was informed the word means 'sisterf***er'.

Brilliant: The man was spotted in Las Vegas, proudly wearing what he thought was a loving gift from his ex, blissfully unaware that the word emblazoned across his chest means 'sisterf***r'

The unnamed man was spotted on the strip in Las Vegas at around 4am on Friday by a man using the Twitter handle '@brohsen'.

The latter, who knew the meaning of the word, could not stop himself and took a picture and posted it online.

He wrote: 'asked him if he knew what his shirt meant said his ex got it for him and told him it means i love you and i think that’s beautiful.'

The word, which exists in both Punjabi and Hindi, is used across South East Asia as a swear word and an insult.

The tweet soon went viral, having been shared by thousands of amused users, some making Game of Thrones jokes about the incestuous relationships in the Targaryen and Lannister clans