When used in the context, we are callin' bovice, refers to runnin' a train on a female. or in the rare case that two females plan on callin' bovice...u get the picture
"Last night me and my dude called bovice on that one girl."
He told the press that he only wanted the crowd to march to the Capital, not takeover the Capital, by revolting. Yeah right! That sounds like his usual "male bovine fecal material"! He's full of it!