Obscence or without meaning; sometimes means an undefined swearword, making it possible to swear like hell at people who have no idea what the gumf you're saying. I'm not gonna put an example here because I already have ya lazy gumf.
The ceremonial bells used by gümfe (the plural of gumf) during traditional festivities and rituals. The bells are very important to the gumf culture as the bell distinguishes one gumf from another. For every stolen cookie the bell gets an extra engraving.