slipstream definitions

The term "slipstreaming" is most often used in relation to objects moving through air, though not necessarily flying. If a following object, moving at the same speed, can position itself within the slipstream, it will require less energy to maintain its speed than if it was moving independently, because the front object blocks a significant amount of air resistance. Using this principle is called slipstreaming.

Consequently, the art of slipstreaming in conversation means the person who positions themselves in an ongoing conversation needs to exert less energy to join in than the original people involved. However, it usually means that the conversation will be veered to a slightly different subject by the slipstreamer. Are you with me?