The full post from Peter Lumpkins of SBC Tomorrow:

More Inspiration from John Calvin on this our Lord’s Day
During John Calvin’s reign in Geneva, reportedly it was considered a no-no to laugh during Calvin’s preaching, and to do so was met with stiff consequences:

“To laugh during a sermon was a matter which drew after it three days’ imprisonment, and the necessity of publicly asking pardon.”

–“Lives of Calvin” The London Quarterly Review, American Edition, Volume XXXV No.1, p. 286