Rough, animalistic sex so powerful that bed, table, chair, etc. will shake and rumble and doors that are not secured by a heavy lock will shake loose and open.
Jack and Julie were dirty nasty fuckin so hard the other night that their door creaked open just as the mailman was walking by.
When someone is on the clock (at work) and they stand around acting busy and actually do nothing.
The supervisor approached the crew of ditch diggers and separated the two who had been leaning on their shovels talking. He said that any more inaction on the job would lead to their dimissal. Stating further, I'll have no fucking the dog on my watch!