A female, usually of the larger variety, who on occasion, or more often than not, has sexual relations with multiple partners at one time. Results in the creation of a "Moldy, Sloppy Coffee Can" for a vagina. Female may involve herself in such activities as trains, gangbangs and other such gregarious activities.
"Get that bitch a T-Shirt!!"
"Damn that's a huge slotapotamus."
"Yeah, 10-4 we've got a slotapotamus here boys. Strap up."