An 89-year-old married grandfather posed as a 21-year-old hunk on Tinder.

Grandfather posed on Tinder

Grandfather posed on Tinder

The American man, who is known simply as Joe, secured the dates with attractive younger women after posing with the help of his grandson Ethan.

A video clip of the prank has been posted on YouTube and sees Joe ask his unsuspecting dates: ''I'm shocking you am I?''

Following some awkward small-talk, Ethan enters the restaurant to apologise to the women, in the hope they will eventually agree to go on a date with him instead.

However, the majority of the women leave looking very confused.