Sounds like a crazy combo!! And a little bit too sweet for me. But I have had a few crazy ideas for sandwiches in the past:
Bread
Tuna
Cheese
Lettuce
TOMATO SAUCE! eek
Bread
^ -- In the order from top to bottom.
The tomato sauce kinda... changed the taste completely - I think I got bored. I wanted to add pineapple on it I think, but couldn't find the can opener, so I just put a load of tomato sauce on it.
And I ate it all up =)
But No mayonnaise though with the Tuna!!! I can't stand that mix!