Butter
In Aviation, it simply means landing an aircraft smoothly below 100 V/S, made famous by Airforceproud95 and Swiss001... in the normal world... simply means a condiment used for cooking and simply using it on toast... but this definition is on the Aviation side.
Ok uhh... Flight 123 clear to butter at Runway 12
Roger, Flight 123, we are clear to butter the bread all sides

So you people simply use jam in your toast... i use Butter