| Acronym | Meaning |
| PIMPL | Peeing In My Pants Laughing |
| PIN | Person In Need |
| PIR | Parent In Room |
| PITA | Pain In The Ass |
| PITMEMBOAM | Peace In The Middle East My Brother Of Another Mother |
| PLO | Peace, Love, Out |
| PLOKTA | Press Lots Of Keys To Abort |
| PLOS | Parents Looking Over Shoulder |
| PLS | Please |
| PLZ | Please |
| PM | Private Message |
| PM | Personal Message |
| PMBI | Pardon My Butting In |
| PMF | Pardon My French |
| PMF | Pure Freaking Magic |
| PMFJI | Pardon Me For Jumping In |
| PMIGBOM | Put Mind In Gear Before Opening Mouth |
| PMJI | Pardon My Jumping In |
| PML | Pissing Myself Laughing |
| PMP | Peeing My Pants |
| PMSL | Pissed MySelf Laughing |
| PNATMBC | Pay No Attention To Man Behind The Curtain |
| PNCAH | Please, No Cursing Allowed Here |
| PND | Personal Navigation Device |
| PND | Possibly Not Definitely |
| PO | Piss Off |
| POAHF | Put On A Happy Face |
| POAK | Passed Out At Keyboard |
| POM | Parent Over My Shoulder |
| PONA | Person Of No Account |
| POOF | Good-bye, Gone; Also Seen As ::poof:: |
| POS | Parent Over Shoulder |
| POS | Piece Of Sh*t |
| POSC | Piece Of Sh*t Computer |
| POSSLQ | Persons Of The Opposite Sex Sharing Living Quarters |
| POTS | Pat On The Shoulder |
| POTS | Plain Old Telephone System |
| POTUS | President Of The United States |
| POV | Point Of View |
| PP | People |
| PPL | Pay-Per-Lead |
| PPL | People |
| PRON | Porn |
| PRW | Parents Are Watching |
| PS | Post Script |
| PSA | Public Service Announcement |
| PSO | Product Superior To Operator |
| PTH | Prime Tanning Hours |
| PTMM | Please Tell Me More |
| PTP | Pardon The Pun |