Spaghetti walling - I think this means “throwing things at the wall and seeing what sticks”, my guess from the old wives tale that you can test the doneness of spaghetti by seeing if it sticks when thrown at a wall.

Backronym - an acronym that was made by first deciding what the finished acronym should be, then working backwards to decide what it should stand for. Usually used by NASA nerds to make cool sounding projects or by politicians to make evil shit sound friendly and benign.