Paris Saint-Germain's title celebration were put on ice for another week after they suffered an embarrassing 5-1 defeat at the hands of second-place Lille on Sunday.
Lille went ahead after Meunier diverted a Jonathan Ikone cross into his own goal in the seventh minute.
They leveled proceeding four minute after though, with Juan Bernat netting after a wonderful assist from Kylian Mbappe.
They thought they had turned it around entirely minutes later when Mbappe had the ball in the net, arrowing a finish past Mike Maignan after turning on the after-burners to get clear of the Lille defence.
However, the Spanish full back was shown a straight red card shortly before the break when he brought down Pepe as the striker was rushing towards goal.
The header, placed in the bottom right corner, saw the stadium erupt as Lille stamped their dominance on the match with a 4-1 lead.
If that was a setback, you would not have known it from Lille's second-half performance.
Firmly on the ropes, the 10 men of PSG could not regain composure as the tie entered the latter stages.
Arsenal target Pepe was the man to make the breakthrough and restored Lille's lead, breaking through the Parisian backline and latching onto Nanitamo Ikone's pass to smash the ball past Alphonse Areola in goal.
The scoring did not stop there as former Southampton defender Jose Fonte bagged home the side's fifth on the night by nodding home a cross from Pepe to rub salt into the wounds of PSG, who will now have to wait another three days to secure the title against Nantes.