A White Castle hamberger, a slider that is eventually regurgitated. (White Castle is a hamburger resteraunt in the United States).
by Squid Viscious July 19, 2005
whenever you transition to da butt sex position or da doggy styles. usually renders a women unable to sit for 3 days.....
Will: Wow Burto...Chris really did work on her butt.
Burto: yea i hear that he gave Kiera the Back Door Slider...
Will: ROUGH!
Burto: yea i hear that he gave Kiera the Back Door Slider...
Will: ROUGH!
by William Hake August 27, 2008
by The Gosh Dang Bruin April 20, 2021