Feef

Noun
When air is trapped in the foreskin and escapes making a flatulence

(Foreskin Fart, Dick Queef)

Verb
The act of audibly releasing air trapped in the foreskin

Noun
John was opening and closing his foreskin so fast, he let out a Feef.

Verb
Tom's girlfriend blew up his foreskin like a balloon, just to hear him Feef.