A sandwich which has been deceptively stuffed and packaged to appear as though it has more meat (or other filling) than it actual does. Often, meat is concentrated in the middle, then the sandwich cut in half to reveal what seems to be an abundance. In reality, the meat is just poorly distributed and large areas of the bread hollow. Its a scam and a nightmare.
That corner deli sells nothing but scamwiches.
The cold wraps at Pret are packaged like scamwiches.