Eat-a-thon 

1. An eating contest.sometimes timed
Where the object is to consume as much food as possible in a given amount of time. (Think adam. Richie's man. Vs food) 2
2. Same as above. Difference being what is being "eaten" (in this. A. Cunnilingus contest)

1.bill: how did you like the buffalo wings cook-off? Mike:. Loved it! It was an absolute eat-a-thon! 2. Did you see those women from the intra mural. Team? Yah. Would love to have an eat-athon with every single one of them!

Eat-a-thon by 4realazitgits March 4, 2021

Eat a thong

Literally
To run your tongue across the entire circumference of woman's thong. Warning: extra curricular activities may ensue!

I was doing an eat a thong with my gf
When I face planted her rain forest. I got a load of clit spit! Tastesaytional!

Eat a thong by 4realazitgits March 4, 2021

eatathon 

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"

eatathon by Big_Dog_Breno July 13, 2011