Now that he's made his departure plans public, White House spokesman Robert Gibbs can focus on his next big event: his favorite college football team's bid for a national title.

Should his Auburn Tigers beat the Oregon Ducks on Monday night, Gibbs says he plans a special D.C. celebration: a toilet paper roll on a White House tree.

"If Auburn wins, I will come back, I will get a little agreement with the Secret Service," Gibbs said in an interview with the CBS College Sports Network to air tonight. "We'll put a couple of rolls [of toilet paper] up there, and then I can help take it down, so it doesn't look like we trashed the place."

In Auburn, Ala. -- Gibbs' hometown -- residents roll a 150-year-old tree every time the Tigers win, something they've done on 13 occasions this season without a loss. Oregon is 12-0, and the game is too close to call.

Last month, Gibbs told USA TODAY that he and 7-year-son Ethan did the same thing in their yard after Auburn's last two wins, a come-from-behind over arch rival Alabama and a blowout in the Southeastern Conference championship game against South Carolina.

Gibbs -- who announced yesterday he would leave his White House post early next month -- will attend the Auburn-Oregon game Monday in Glendale, Ariz.

In tonight's interview on The Tony Barnhart Show -- reported on by our friends at Politico -- Gibbs said President Obama is well aware of his passion for Auburn football:

"We talk about it every week. We did during the season. I traveled during the season. During the LSU game, we were on the road. A bunch of people were in suits and I was wearing the Auburn shirt that I've worn for every game that I've watched this year. He (Obama) gets how big a deal this is for me. He enjoys and loves college football ... I've watched some of their games in my office. I've got a pretty decent size TV in there thankfully. Sometimes it's hard. One week we were on the road and I had to talk to the advance people about making sure that we had some TVs and could watch some games if we needed to."

(Posted by David Jackson)