the airplane tends to float in ground effect
Noticed this one many times as pax on a 737, almost to the point of mild fear and an un-nervingly large distance along one of the runways at LHR! They just don't seem to want to land sometimes! From a pax perspective, it often feels as if its sometimes a struggle to get the aircraft on the ground.
In answer to the prevous poster, I have experienced quite a few greasers as pax (737/A320/F70), so it is possible, but whether they were intentional or not is an entirely different matter!