Dean Smith deemed his Brentford side's performance in the 2-1 defeat to Wolverhampton Wanderers as the worst at Griffin Park in his tenure.
The Bees were flat and failed to penetrate and it would have been a travesty if Maxime Colin's fourth goal of the season had settled the game.
Wolves hit back in the dying seconds with Matt Doherty and then Helder Costa handed the black country side all three points.
Smith said: “That was certainly the worst performance at Griffin Park in my time here. I don’t even think we had a first gear and Wolves were better from start to finish,” he said.
“I don’t know why it happened because this is a group of players I have a lot of belief in.
“Today we were outbattled. They won every loose ball, won the second balls and I don’t think we won a header all game. Normally we outfootball sides but we couldn’t pass water.”
He added: “If you get beaten by a side that outmanoeuvres you, you can take it but they had more desire. How we got to half time at 1-0 I don’t know. I’d have taken 1-1 at half time.”
“I will be disappointed if it’s down to mindset that the players think we are safe. We have targets and I don’t want the season to just fizzle out.”
Brentford have the chance to put things right on Saturday when they travel to Burton Albion.
Smith added: “I'm glad we've got another game because I wouldn't want to go into the international break after that performance.”