A middle-aged casually dressed man props his feet on his desk .
A middle-aged man is at his desk .
A middle-aged casually dressed man props his feet on his desk.
A middle-aged man is at his desk.
A middle aged man propping his feet onto his desk implies that he is at a desk to prop his feet onto.
A middle aged man propping his feet onto his desk implies that he is at a desk to prop his feet onto .