As popular culture such as movies and videogames are increasingly violent, one could actually suspect that society rituals also change slowly. As example in a post-Tarrantino society it would not surprise me if people starts shooting the wedding cake together, rather than only cutting it together, which is known to be the custom where I come from.
In the appropriate time in a wedding, bring forward a pistol of a certain size. The newly wedded couple holds the gun together, aims at the wedding cake and pulls the trigger. The cake will splatter around at the guests and everybody will be happy and drink champagne.