McFadden arrived Wednesday afternoon at the University of Arkansas student union looking like Fred Flintstone in a black wig, blue tie and leopard-print outfit.
As usual, Jones played McFadden's sidekick. In this case, he dressed up as Barney Rubble and walked around campus in a yellow wig and brown ensemble looking like Fred Flintstone's prehistoric friend.
"I like (the) Mario Brothers myself, but The Flintstones worked," Jones said, smiling as he posed for pictures with McFadden.
Fans voted online to determine what the two running backs should go as for Halloween. More than 4,000 votes were submitted, and some of the other options included McFadden and Jones dressing up as the Blues Brothers or Sonny and Cher.
"I think they were trying to get me to be Cher," McFadden said. "They said I had legs like her."
McFadden, Arkansas' all-time leading rusher and a Heisman Trophy candidate, posed for pictures with students and strutted around like a more muscular Fred Flintstone with tattoos.
At one point in the afternoon, the junior stomped his feet, ran in place and then took over screaming, "Yabba Dabba Doo!" -- Fred Flintstone's catchphrase.
Last Halloween, McFadden garnered attention by walking around Arkansas' campus dressed as a clown with black-rimmed glasses, a rainbow-colored wig and blue suspenders.
So did McFadden like being Fred Flintstone more than Darren the Clown?
"I don't know about that because the clown outfit, it was original," McFadden said, cracking a smile.
The Halloween costumes McFadden and Jones wore Wednesday will be auctioned off on Hogwired.com, Arkansas' official athletic Web site. The proceeds will go to Boys & Girls Clubs in McFadden's hometown of Little Rock and Jones' hometown of Tulsa.
Yabba Dabba D-Mac!
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