the end of a penis, Though not an ordinary penis, a great big bulging purple ferret head of a penis. the jeff end is prefabbly known as a circumsised penis head.
"oh ya f***kin Jeff End"

"would you like a bit of my jeff ;)"

"the day you win the lottery, the day my jeff end re forms his feather coat (foreskin)
by Daryl Veal August 20, 2006
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