There are a couple variations on this move. In some instances, leads are directed to truck to the center first; in others, follows are directed to truck to the center. Regardless, the point is to create some distance between leads and follows. As I see this as a two-part call, with part one creating that separation, it could be at the caller's discrecion. In part 2, the caller would call Frankenstein, the leads emulate the classic movie monster by raising both arms in front of themselves, walking in a stiff-leg, somewhat robotic gait, while moaning. Follows, in turn emulate the female victims in classic horror movies by overdramaticly feining fear.
Words that rhyme with Frankenstein: *There aren't any good rhymes for Frankenstein. ¯\_(ツ)_/¯
First part, use rhyme variations for truckin':
Once leads and follows are seperated, then we'll call Frankenstein