Hollywood actor Will Ferrell is auctioning a cameo role in his new film to raise money for a friend's charity.
Ferrell first shot to fame on Saturday Night Live
Online bidding begins on Monday and closes on 26 September. The winner will join Ferrell on the set of Step Brothers and appear in a scene.
Proceeds will go to the Cancer for College foundation, set up by Ferrell's university friend and cancer survivor Craig Pollard.
Ferrell's previous films include Wedding Crashers and Blades of Glory.
"What a perfect Christmas present for your son or daughter," Ferrell said.
"It is the surefire way to win the parent of the year award. Support this amazing cause by buying them me."
The winner will be announced on 27 September and will meet the actor the following day at a golf tournament dinner in aid of the charity.
Mr Pollard, who overcame Hodgkin's disease twice as a teenager, set up the charity to provide college scholarships to current and former cancer patients.
Cancer for College has awarded $200,000 to 50 cancer survivors since 1993.
Step Brothers, due for release next year, stars Ferrell and Adam McKay as two spoiled sons who become competitive stepbrothers when their single parents marry each other.