UFC champ Dennis Bermudez reveals that the pranks pugilists play behind the scenes of FX’s “The Ultimate Fighter” are as almost as vicious as what goes on in the ring. “We’ve done some pretty mean things,” Bermudez told us, “from putting rotten eggs in one athlete’s shoes to barricading [a fighter] in their room.” He added that his UFC comrades also recently bet fellow fighter Dustin Pague he couldn’t eat “three beetles and a spider for $40.” (He did.) Bermudez was signing autographs at a Titan Body Wash event at East Coast MMA Fight Shop in Rockville Center on Sunday.