(noun) The result of placing some messy, sticky, and smelly mass upon the keyboard of a laptop or notebook computer. Then the screen is swiftly shut upon the mass therefore permanently damaging the computer. A favorite substance of use is one's own shit because of it inexpensive and readily available nature. Reported incidences of laptop sandwiches have been increasing in recent years, especially on college campuses. Generally those who have received a laptop sandwich are hated by several others and often times known as douchebags.