The wide receiver once again showed up to a game without footwear, but this time it was fitting considering he was dressed as the iconic caveman Mack Hollins had a “yabba-dabba-doo time” at ...

That's because he was dressed like one ... Fred Flintstone. Tweets by mackhollins This article originally appeared on Touchdownwire: Mack Hollins of Bills arrives dressed as Fred Flintstone ...

Mack Hollins of the Buffalo Bills continues to top himself when it comes to wardrobe. A week after arriving as Fred Flintstone, the wideout/special teams star came to Sunday’s Baltimore Ravens ...

Mack Hollins had a “yabba-dabba-doo time ... For the occasion, he dressed up as the stone-age cartoon character Fred Flintstone. Much like the iconic caveman from Hanna-Barbera's The Flintstones ...