A sammich is a type of sandwich. However, it is not just any kind of sandwich. Any old schmuck can throw lunchmeat between two slices of bread and have a sandwich.
But no. A sammich is not just a sandwich, it is not just a meal. Sammich is a term reserved for only the holiest and mightiest of all sandwiches. A sammich is a true work of culinary art; a feast on a bun, if you will. A sammich is not made of the best ingredients; it is made of the *right* ingredients. It needs the right meats, and the right cheese(s), the right sauce, the right veggies, and the right kind of bread.
Taking footlong sub bread and throwing every kind of meat and cheese and everything else under the sun or in your kitchen pantry on it does not a sammich make. It is akin to an incohesive mishmosh of colors on an artist's easel.
Sandwiches make a good snack, but sammiches are forever.
To put someone, who is usually inexperienced, into a very difficult and extremely high-pressure situation where there is a high chance of failure.
Throw to the wolves: An example would be making an 18-year-old kid who has never pitched in the Major Leagues, take the mound against the New York Yankees in Yankee Stadium in game 7 of the World Series, with the bases loaded in the bottom of the 9th with the Yankees down by one. Oh yeah, and Alex Rodriguez is at the plate. Have fun, kiddo, you've been thrown to the wolves.
In baseball terminology, a brushback is a pitch, often used for intimidation purposes, thrown near a batter's head. A pitcher will throw a brushback if he thinks the batter is crowding over the plate, is being a showboat, or for retaliation.
Brushbacks can result in warnings, ejections, or even bench-clearing brawls.
Nolan Ryan threw a brushback at Robin Ventura years ago...and then proceeded to administer a grade-A asswhoopin' on the poor guy.
Roadtrip remnants are basically the trash left lying in your car after concluding a long roadtrip, usually with a few friends in tow. They usually consist of, but are not necessarily limited to, (half) empty bags of potato chips, food crumbs, empty soda cans/bottles, food wrappers, fast-food drink cups, and maybe a condom or two.
After coming back from Utah last weekend, I spent an hour cleaning the roadtrip remnants out of my car.