In the past, residents of Fifth East found it amusing to roll or drop heavy objects across their floor at all hours of the day and night, creating loud thumping that could be heard throughout the East Parallel.
Rumor has it that after having lost their original 100kg Ultrabuster, Fifth East obtained two smaller "mini-busters" which they would drop with great enthusiasm. Tragically (more or less), those new noisemakers were barely audible through the miraculously indestructible concrete-&-asbestos East Campus floors. Since the mini-busters were such a dud (or lack there of) Fifth Easters soon lost interest . . . or maybe they lost them too.