look up any word, like cleveland steamer:
 
1.
A smorgasboard of food. A buffet of delicassies. A number of food items served at once to a group of friends. A hectic cook up of massive proportion.
Example 1:
"I could eat the balls off a jockey and chase the horse for seconds! Let's cook up an eatathon!"

Example 2:

Geoff says "hey boys lets get some ladies around tonight for an eatathon"

Big Dog replies "how bout we get your mum around for an eatathon"
by Big_Dog_Breno July 13, 2011