Watch Manchester United vs Liverpool, live on Sky Sports Premier League on Super Sunday, with kick-off at 2.05pm
Thursday 21 February 2019 11:17, UK
Liverpool travel to face bitter rivals Manchester United in the Premier League on Sunday, live on Sky Sports, and two fans have put their loyalty to the test ahead of the crucial match at Old Trafford.
Manchester United supporter Nathan Stober and Liverpool fan Oliver Martin have taken a polygraph examination, also known as a lie detector test, to determine just how loyal they are to their club.
Have they ever cheered a goal for their rivals? Which set of supporters produces the best atmosphere? Who makes the best holiday companion - Jurgen Klopp or Ole Gunnar Solskjaer?
These are the questions we put to the pair ahead of one of the most fiercely contested fixtures in English football.
Click the video at the top of the page to see if the two fans passed their test.
