big bonk

Has someone in your group said something so disgusting, so vile, so wrong that the only reasonable thing to do is bonk them to shut them up? But oh no, there is no "bonk" spell, nothing that kinda sorta fits but it isn't good enough? Well fret not, my fellow spellcaster fellow. For this spell is for you! 

When that certain group mate says something so wrong, just bonk them! Roll 2d6 for bludgeoning damage on a failed CON saving throw and give them the bonk of a lifetime that they deserve. 

-Add 2d6 per level