Mike Tindall says he is like a little boy on Christmas Day on the eve of England's first game in the Rugby World Cup in New Zealand.
Ahead of his side's Pool B clash with Argentina in Dunedin on Saturday, the stand-in skipper has admitted he is struggling to contain his excitement.
"It's really hard to explain but I love the day before," said Tindall.
"I never want to go to bed because I just like thinking about things. I'm waiting for Santa to come."
Tindall, a veteran of England's 2003 victory, will run out alongside 20-year-old Manu Tuilagi on Saturday.
But he has warned the younger members of Martin Johnson's squad that no words can prepare them for playing on the biggest stage of all.
"You can talk to them but, until they embrace it themselves, you can't really tell them what it's going to be like," he said. "You only get that experience by being here.
"Obviously, in the environment New Zealand provides, there is always a 24/7 reminder you are in a big tournament and you've just got to get used to that.
"We spoke about it before we came away. We've been quite lucky in Dunedin, it's been quite low-key so far but as soon as it starts then that pressure is going to build. If we get off to a good start, that puts that on the back-burner straight away."
England and Argentina will play under Otago Stadium's brand new futuristic transparent roof, which lets in light and magnifies the crowd noise.
"I think from what you hear from the previous games, it will be very noisy," said England team manager Martin Johnson.
"When there's a crowd in there, the sound reverberates around. We've spoken about that and communication on the field.
"I think it is a fantastic stadium. It's a very personal stadium, a great size and the surface is pretty good. It's a different feel at night. With the lights on and the crowd, I think it will be a great venue."
England: Ben Foden, Chris Ashton, Manu Tuilagi, Mike Tindall (captain), Delon Armitage, Jonny Wilkinson, Richard Wigglesworth; Andrew Sheridan, Steve Thompson, Dan Cole, Louis Deacon, Courtney Lawes, Tom Croft, James Haskell, Nick Easter.
Replacements: Dylan Hartley, Matt Stevens, Tom Palmer, Tom Wood, Ben Youngs, Toby Flood, Matt Banahan.
Argentina: Martin Rodriguez, Gonzalo Camacho, Gonzalo Tiesi, Santiago Fernandez, Horacio Agulla, Felipe Contepomi (captain), Nicolas Vergallo; Rodrigo Roncero, Mario Ledesma, Juan Figallo, Manuel Carizza, Patricio Albacete, Julio Farias Cabello, Juan Manuel Leguizamon, Juan Fernandez Lobbe.
Replacements: Agustin Creevy, Martin Scelzo, Mariano Galarza, Alejandro Campos, Alfredo Lalanne, Marcelo Bosch, Juan Jose Imhoff.