It is believed the bizarre incident took place at the weekend, immediately after the couple had just got married in a nearby church.
The ‘diffing’ takes place on the main road to Gortahork, just at the turn off for Magheraroarty.
It also appears that cars have blocked off the road to other users to enable the driver to perform the act of ‘diffing’ around the happy couple.
In the video, the motorist in the twin-cam begins driving at dangerous speeds in a circle around the bride and groom with burning rubber going everywhere.
However, that’s clearly what the couple wanted and after the ‘diffing’ commences the wedding party simply continued on to their reception afterwards.
Gardaí in Milford have launched an investigation into the incident and are keen to speak to those involved in such a dangerous act which could have gone badly wrong at any time.