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1.
The abbreviation of the phrase 'Put out first night'. The act of sleeping with someone after only the first night of meeting them.

Generally pronounced as a word, for example 'Poffon'

Variations on this are pofning and pofned
Dave: Hey Neil, I bet she pofn!

Neil: Yeah she does, I slept with her last night and only met her yesterday!

or

Neil: What happened to that girl you met last night?

Dave: She Pofned
by Neil_Appeal November 18, 2007
 
2.
"Peace Out For Now"

a variation of TTFN from the hit classic series Winnie the Pooh
Frank: Hey, I'm going to go now!
Valli: Aight, POFN!
by maizeknight08 August 15, 2008