Louis Walsh poked fun at Dermot O'Leary during Saturday's (08.10.16) 'X Factor'.
Both Louis and Dermot were axed from the show last year, with Dermot replaced by presenting duo Caroline Flack and Olly Murs and Louis replaced by judge Nick Grimshaw and the Irish music manager couldn't resist alluding to it during the first live show this year.
When Dermot approached the judges' table, Louis quipped: "Where's Olly?"
Dermot simply responded by saying "Oh Louis" while the studio audience booed the judge.
Meanwhile, it wasn't the best start to the live shows for Louis as his band Brooks Way were suspended.
Twins Josh and Kyle Brooks, 17, did not take part in the live show after it was revealed that show bosses are looking into claims that Josh sent threatening messages to his former girlfriend Amelia Clarke.
A source told MirrorOnline: "They're investigating serious allegations about Josh allegedly sending threatening messages to her."
Another source added: "They are not being replaced by another act - there will simply be 11 acts, not 12.
"Show bosses have not axed them - they have been suspended while the show has a chance to investigate claims."
The pair were put through to the live shows by mentor Louis but during the week Josh was forced to deny claims he had assaulted Amelia after a report emerged claiming he had been arrested after a fight broke out at a New Year's party.
He said in a statement: "A fight broke out between me and another male at a party.
"Amelia, along with others, tried to break it up and she was accidentally knocked in the process. It was never my intention to hurt her or put her in danger and this situation is way out of my character."