Watford crashed out of the EFL Cup to League One side Gillingham, losing 2-1 in extra time.
The Hornets took the lead in the 58th minute through Odion Ighalo, but were pegged back in the 82nd minute by Gillingham, with Mark Byrne striking late on to take the game to extra time.
Gillingham then completed the comeback in the first half of extra time when Bradley Dack put the away side in front from close range in the 102nd minute.
Watford were unable to find an equaliser against their lower league opponents, exiting the EFL Cup at the first hurdle and joining West Brom as the only Premier League sides not to make it into the third round on Tuesday night.
Walter Mazzarri handed a debut to Younes Kaboul, who moved to Vicarage Road from Sunderland due to personal reasons, and also started captain Troy Deeney, but it wasn't enough to get past the Gills.
On what was an embarrassing night for Watford, fans have taken to Twitter to express their feelings, ranging from anger to hilarity.
That team should have won comfortably. Some awful performances from players with much to prove. New attitude needed for Arsenal #watfordfc— Adam Vessey (@AdamVessey) August 23, 2016
Possibly the worst Watford performance I've ever seen at the Vic, and that's saying something. No passion on the pitch or bench #watfordfc— Dan Bugler (@Dan_Bugler) August 23, 2016
I'd like the players to give everyone their £10/£15 back after that performance #WatfordFC— Danny Seabrook (@Danny_Seabrook) August 23, 2016
I'm sick of us using this cup like a training exercise, it's arrogant. Bigger clubs than us take it ALOT more seriously. #watfordfc— JHO The Hornet (@iamjhooakley) August 23, 2016
Will take tonight's result as long as the likes of Nyom, Paredes & Anya are shown the exit door pronto. #watfordfc— Simon Neill (@Nelly979) August 23, 2016
Dunno whether to be happy or sad that my car broke down on the way to the ground today #WatfordFC— Daniel Lally (@daniellally1) August 23, 2016