Well, the NFL still doesn't fine for flopping.
The infamous flop took place after Simpson pulled Browns linebacker Scott Fujita, feet first, out of a scrum during the second quarter. When Fujita got up and made slight contact with Simpson, the receiver launched himself backward and to the turf.
A flag was thrown and a personal foul penalty was called on Fujita. That penalty, however, was offset by the personal foul on Simpson for pulling Fujita from the pile of players.