Top definition
When the skin of a scrotum can be stretched to an extensive length, and most commonly used to wipe ones butthole.
Mara: Whats that hanging out of your gym shorts?
Will: Oh! thats my Elastisack, suck on it and make me a sandwich.
by PhoenixHasBigDick April 21, 2011
Get the mug
Get a Elastisack mug for your papa Bob.