No matter what RPG system we play, burgers have become a running gag in our weekly tabletop session. We were playing the ASOIAF system (in other words, A Song of Ice and Fire/Game of Thrones) in a custom homebrewed setting. At the time, our characters commanding a massive battle, and one of players sought to convince a peasant for faster transportation down newly formed waterways after a water spirit was convinced to flood the battlefield. Said player made burgers for the peasant, and promptly began to slaughter the enemy once the peasant agreed to help them (they were a sword spirit, so they mainly focused on combat abilities rather than anything else such as social skills).

Sadly, when we were playing Pendragon, our DM wouldn't allow me to offer King Uther a burger. A shame, really.