Millwall goalkeeper David Forde hopes to inflict further misery on Aston Villa in Friday's FA Cup fourth round tie at The Den.
Villa head to London after being humiliated by League Two side Bradford City in the Capital One Cup semi-final on Tuesday.
"We'll be the underdogs which suits us down to the ground, but the fans will get right behind us and they are very effective when they smell a bit of weakness," said Forde.
"Villa will be wounded, though, and looking to right the wrongs of midweek.
"We know Villa are struggling at the moment. They are in a transitional period and going for a younger approach but they've still got loads of quality.
"This is a unique club with a unique stadium, The Den, and a cup game under the lights gives that added bit of spice.
"The fans will be preying on some of the younger players who have yet to experience that and hopefully it will work to our benefit.
"They make it an intimidating place to come. There will be 15,000 but they will sound more like 30,000.
"It's a cup game, anything can happen. Hopefully if we can score first it will further dent their confidence and put some pressure on them.
"Since I've been at Millwall we've been concentrating on the league. But you see Bradford and Swansea getting to the final and say 'why not'? It can be done."
The match is being played on a Friday night because a demonstration is being held on Saturday against proposed cuts at the local Lewisham Hospital.