| packaged goods | | | |
| pack in | | | |
| padded cell | | | |
| page-turner | | | |
| painting rocks | | | |
| paint the wagon | | | |
| palace politics | | | |
| palm off | | | |
| paper tiger | | | |
| parade passed someone by | | | |
| pare down | | | |
| park the bus | | | |
| party-down | | | |
| party hearty | | | |
| pass away | | | |
| pass the bottle of smoke | | | |
| pass under the yoke | | | |
| patch up | | | |
| pat on the back | | | |
| pawgun | | | |
| pay dividends | | | |
| pay off old scores | | | |
| pay the bills | | | |
| pay the piper | | | |
| p'd off | | | |
| peanut gallery | | | |
| pearl-clutchy | | | |
| pea-time is past | | | |
| pee in one's pants | | | |
| pee one's pants | | | |
| peg the needle | | | |
| pencil-neck | | | |
| penny in the fusebox | | | |
| pen picture | | | |
| perfect storm | | | |
| person from Porlock | | | |
| phrasebook | | | |
| pick at | | | |
| pick of the litter | | | |
| pick out | | | |
| pick up one's marbles and go home | | | |
| pick up the tab | | | |
| pidgin | | | |
| piece of crap | | | |
| piece of the action | | | |
| piece of work | | | |
| pigeon | | | |
| pigs might fly | | | |
| pillow talk | | | |
| pin down | | | |
| pipe dream | | | |
| piping hot | | | |
| piss and moan | | | |
| piss away | | | |
| piss money up the wall | | | |
| piss on | | | |
| pitch in | | | |
| pixel peeper | | | |
| plant a seed | | | |
| play along | | | |
| play ball | | | |
| play by ear | | | |
| play fast and loose | | | |
| play for time | | | |
| play hooky | | | |
| play it cool | | | |
| play Old Gooseberry | | | |
| play one against another | | | |
| play politics | | | |
| play silly buggers | | | |
| play the cat and banjo with | | | |
| play the dickens with | | | |
| play the man and not the ball | | | |
| play the ponies | | | |
| play the wag | | | |
| play up | | | |
| pleased with oneself | | | |
| plough money | | | |
| plow one's way | | | |
| plug in | | | |
| poacher turned gamekeeper | | | |
| pocket up | | | |
| point man | | | |
| point up | | | |
| poke holes in | | | |
| poke the bear | | | |
| polite fiction | | | |
| pony in the barn | | | |
| poop oneself | | | |
| poor little rich boy | | | |
| pope's nose | | | |
| pop one's wad | | | |
| porcelain god | | | |
| pork up | | | |
| pot calling the kettle black | | | |
| potter's field | | | |
| pound the pavement | | | |
| pour down the drain | | | |
| pour oil on troubled waters | | | |
| powder keg | | | |