To canoodle is to cuddle, pet, caress, etc. fondly.
A sandwich is a food item usually consisting of more than
one (most likely three) layerable food.
A hoagie is very much like a sandwich (and is considered to be a kind of
one by many) but is different in the sense that they consist of a much greater number of layers of food.
A canoodling sandwich consists of three
people fondly caressing, snoggling, cuddling each other in one place at one time.
A canoodling hoagie is much like that of a canoodling sandwich but with much more
people (usually four to ten).
As I passed by the seating area during cocktail hour, I witnessed Emma and
Dustin cuddling in the corner of one of the couches. Greg saw them and joined in on the action. I walked away.
Roughly thirty minutes later, I passed by again, but this time, Ken, Juliette, Tim,
Helena,
Colin, and Hugh had all found their places on the couch. The canoodling hoagie had been formed and didn't seem like it was going to dissipate any time soon.