Gronfing
Gronfing is the act of eating greedily, noisily and messily. It is associated with the verb gronf which is to eat greedily, noisily and messily and the noun gronfy a person who gronfs. It is believed that the word originated in Scotland where a colloquial name for a pig is a "grunfy", but is now used south of the border.
"It's drinks and nibbles at Jennie and Phil's tonight; Malcolm hasn't been invited, after all once he gets gronfing no-one else gets a look in."