Exonerated Gold Coast playboy Gable Tostee has bizarrely appeared on a social media post under his new name after being the first person to win a local cafe's challenge - downing a massive milkshake in record time.

Tostee, who changed his name to Eric Thomas midway through his court case over the death of his Tinder date, New Zealander Warriena Wright, drank the Godfather - a gargantuan offering from Southport cafe Gangster and Gatsby.

The concoction stands at half a metre tall and contains five litres of ice cream, half a litre of milk and up to a litre and a half of whipped cream.

The cafe posted to its facebook page this afternoon:

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"THE GODFATHER HAS BEEN DEFEATED!!

"Eric Thomas (pictured) is the first person ever to emerge victorious in the Godfather Challenge!

"Having defeated the Godfather Gangster Shake in a mind blowing 13.28min!!

"Eric receives his money back + $50, a T-shirt and advances to the Grand Final to compete for $1000 worth of travel!

"Congratulations Eric!!"

A video of the milkshake being made was viewed more than 600,000 times online.

Gangster and Gatsby's giant milkshake called the Godfather with customers Sean and Kai. Photo / News Corp Australia
Gangster and Gatsby's giant milkshake called the Godfather with customers Sean and Kai. Photo / News Corp Australia

Mr Tostee was found not guilty of murder and manslaughter over Ms Wright's tragic fall from his balcony in 2013.