Celtic supporters have accused the Dons of once again being bottlers.
Celtic fans were over the moon on Friday night as Aberdeen lost 2-0 at Ross County.
After racing to the top of the table, the Dons will now find themselves behind Celtic even if the Hoops draw this weekend.
In many ways, of course, it's a bad thing for Celtic. The fact Ronny Deila's men see their woes fixed so easily - and without doing anything themselves - isn't exactly going to push them to improve like a serious challenge would.
Aberdeen may well provide that serious challenge after this blip. But the early signs aren't good.
The Dons have now lost their last four games in all competitions, conceding seven in their last two Scottish Premiership games alone. It's not exactly the ideal response to going clear of Celtic at the top of the table.
Naturally, Celtic fans had plenty to say about the 2-0 loss to Ross County on Twitter, with many accusing Aberdeen of being bottlers and many suggesting the Bhoys basically have their hands on a fifth league title in a row already.
Look away now Aberdeen fans, here's a selection of the mockery that will add insult to injury... unless Celtic slip up themselves later today...
Aberdeen really are genuine title contenders!!! Here we go 10 in a Row! #Celtic— Lee Fitz (@UncleLroyCFC) October 16, 2015
Oh ya little beauty! I see the supposed title challengers Aberdeen got pumped 2-0 tonight haha. There's only 1 team that matters #CELTIC— James1888 (@1888_James) October 16, 2015
Aberdeen bottling it again, roll on tomorrow can't beat an away day with the bhoys! Back to the top we go#celtic— Liam Oliver (@liamoliver7) October 16, 2015
FT Ross County 2-0 Aberdeen. Bhoys can top on GD with a draw tomorrow at Motherwell. COME ON YOU BHOYS IN GREEN! #CELTIC— John Bradshaw (@JBLuvsCeltic) October 16, 2015
Am I the only Celtic fan who wanted Aberdeen to keep winning all the time? Wanted a challenge— Danny Watters (@dannyw3369) October 16, 2015