A large, thick erect penis--in other words, a horsecock.
Tom used his bungstretcher on my gloryhole last night. It left me with a big drooling gaper--I love it! : )
by Steph M. August 14, 2007
An unusually large diameter hunk of feces. One which hurts trying to get through the anus.
"Hey Jim, what were those loud screams coming from the bathroom?" "Duh Tom. I was pushing a bungstretcher."
by JD & MK February 10, 2008