The act of one person lifting another so their bodies mimic the shape of the letter 'P'. The lifter represents the stalk, and the liftee the curved part.
The idea started as a way of promoting World Peace Day – people 'peacing together' and posting photos to the web. Similar to planking
Sarah and I got a great shot of us 'Peacing' on facebook for World Peace Day. Too bad she wasn't strong enough to lift me.