ROB McElhenney has shared a hilarious photo from the location shoot of it's Always Sunny in Philadelphia.

Rob, who created the series in 2005, has been filming in Ireland this month with his wife Kaitlin Olson, and co-stars Danny DeVito, Charlie Day and Glenn Howerton.

In a recent Instagram post, Rob posted a video of himself in 90s clothes - possibly a flashback to his character Mac's past.

Wearing a padded sports team coat, which was the style at the time, he also rocks a centre parting, earrings and a gold chain.

With the picture, he posted: "If you lived in 1996 you definitely bought weed from this guy."

It has been reported that up to four episodes of the record-breaking new series of It's Always Sunny in Philadelphia could be set in Ireland.

The forthcoming 15th series will seal its place as the longest running live-action sitcom in American TV history.

Rob and Kaitlin have been sharing photos of themselves and the rest of the cast from the location shoot near Dublin.

Outside of Hollywood, Rob completed the takeover of Wrexham AFC with Deadpool actor Ryan Reynolds in February.

If would no doubt have enjoyed being involved with the club in 1996.

The 1995–96 season saw Wrexham in European action, facing Romanian team Petrolul Ploiești. The home leg ended in a 0–0 draw but Wrexham lost 1–0 in the away leg, knocking Wrexham out of the tournament.

The 1996–97 season saw Wrexham set off on another amazing run in the FA Cup and beating more top flight opposition. Following wins at Colwyn Bay and Scunthorpe United, they were drawn to play West Ham United at home, the game ending in a 1–1 draw on a snow-covered pitch. The replay at Upton Park ended in a 1–0 win to Wrexham, with Kevin Russell finding the net in the dying minutes to send Wrexham into the fourth round. After beating Peterborough United and Birmingham City, the Reds narrowly lost by a single goal to Chesterfield in the quarter final.