Best utilised in public conveniences. You sit there in sublime peace when suddenly you emit a group of noisy gassy bursts that break the tranquillity like machine gun fire. The Sound Effect Dump. You feel a noisy one coming on but relatives, friends or work mates are within earshot. So, you must employ some clever techniques to cover the disgusting sounds you are about to emit.
Timing is of the essence.
Flush the toilet 2. Drop loose change on the floor, 3. Sing the first two stanzas of your favourite opera. The Cling-On Dump. You grip the seat with both hands and wriggle.