The most feared letter that could be typed in a URL as the first letter by a parent or peer attempting to use your device to search something. Especially stressful if continued by the letters O and then R.

A swimmer

Slang to represent money

p

pimp, like calling somebody 'g'

P can mean paper, for example £20 note, so when making money your making P's

(very) Short for the word "pretty". Used anywhere "pretty" would be used as a modifier for an adjective.

Thought to have originated on Flamebate, the Forumwarz forums.