Brisbane have made history for all the wrong reasons after Gold Coast ran out 18-6 NRL winners at Cbus Super Stadium.
Somehow a nightmare season got worse for the battling Broncos after they slumped to a club record ninth straight loss.
In contrast, the Titans' late-season resurgence continued in front of a 9729-strong crowd, sealing their third straight win for the first time since 2017 and fourth victory in six games.
Adding further insult, it marked the first time the Titans have defeated the former glamour club twice in the same season.
Brisbane's 15th loss for the season is also another record and all but ensures Gold Coast (7-11 record) will finish as the highest-placed Queensland team with just two regular-season rounds left.
On yet another night to forget for six-time premiers Brisbane (3-15 record), the three-tries-to-one victory ensured Gold Coast notched their first home win over their arch-rivals since 2014, snapping a five-game losing run.
All eyes were on Gold Coast-bound David Fifita after interim Broncos coach Peter Gentle said he hoped the barnstorming Brisbane back-rower would "show them what they are getting" before moving to the tourist strip next season on a lucrative three-year deal.
And Fifita gave the Titans a glimpse in the 35th minute when he barged over, only to be denied a try after replays showed he had lost the ball over the line.
Indeed it was a night of missed chances for Brisbane who were also denied a Cory Paix 69th minute try after he also knocked on with the line beckoning.
After leading 12-6 at the break, Gold Coast made a dream start to the second stanza when Young Tonumaipea capped a stunning 95m effort by scoring in the 44th minute.
Pivot Ash Taylor created something from nothing with a huge dummy, sprinting through a gaping hole as the ball went through three sets of hands before Tonumaipea crashed over.
Gold Coast hit back in the first half after the Titans spilled a Sean O'Sullivan grubber-kick and veteran Broncos fullback Darius Boyd pounced in the seventh minute.
Titans hooker Mitch Rein levelled with a dummy half run in the 12th minute before much improved backrower Sam Stone made Corey Oates pay for misjudging a Jamal Fogarty kick to score in the 24th.