A term most commonly used amongst the sexually active elderly to describe a
gentleman who’s pubic hair has gone
white, long and untamed - completely hiding his penis, visually resembling the tail of a lamb. He gives his lady one pump in her front
door and one pump in her back door (two shakes) before losing his erection and calling it a night. His lady is less than satisfied, but it’s better than nothing.
“Bernie, are you and Irene coming to
bingo?”
“No, I’ve gotta get this
bitch home to give her Two Shakes of a Lamb’s Tail. See you next week, if we’re not
dead yet.”