Mayo-wich
A sandwich that has such large amounts of mayonnaise on it, that it's about all you can really taste. Not to mention how unhealthy and fattening it is.
Jim: Hey! What are you eating Bob?
Bob: A sandwich, with lots of mayo.
Jim: Looks like a Mayo-wich to me.
Bob: A sandwich, with lots of mayo.
Jim: Looks like a Mayo-wich to me.