Tottering along with stiff feels in your legs they send a jolting cramp from the feet to the calf of your leg and you fall down, rolling and massaging your pained leg.
The tour stops for a moment allowing you to get back to a standing position but the tour guide says nothing to you.
As you and others walk into the plant and see all the brewing cauldrons boiling and churning, others in the group fall down and are experiencing leg cramps, just like those you had when the tour began.
All in the group at ticking along as they walk, unaware they are walking on cloven hooves and their legs are conforming to becoming those common unto swine.