Foldie

A piece of bread , topped with a spread (commonly peanut butter), and folded in half

The term “foldie” was originated in Liverpool by a girl named Kyla

Hey bro, make me a foldie?

Foldie Boi

A sandwich that folds over its contents with an opening being only on one side

Spence ate a foldie boi for lunch

Foldie Boy

A single piece of bread that wraps or folds over its contents in an elegant (or not so elegant) manner.

Spencer got a foldie boy for lunch, he is very happy.