One's brain, or, more specifically, one's collection of memories (and capacity for additional memories). An allusion to the notion that one's mind is like a sponge.
cf. hard drive, floppy drive, thumb drive
cf. hard drive, floppy drive, thumb drive
"I can’t remember much more... Hard drives nearing full. Sponge drive doesn’t work so well for digital assets."
by subpixel April 25, 2009

To not hedge your risk; a universal finance term oftenly used by traders to inform salespeople to absorb the risk and do nothing. Also a code word that signals it is time to panic.
"SPONGE IT!"
"Wait...what is he talking about? Is he calling me useless? I'm too afraid to ask...yup I'm screwed."
"Wait...what is he talking about? Is he calling me useless? I'm too afraid to ask...yup I'm screwed."
by Moyka July 17, 2017

When a female poops her pants and the excrement coats her entire genitalia to the point of complete obscurement
Barbara had a Buena Park Wet Sponge and it looked like someone slammed her crotch with a whole chocolate cake
Brandon was going to go down on me but I had a Buena Park Wet Sponge and he threw up his lunch
Brandon was going to go down on me but I had a Buena Park Wet Sponge and he threw up his lunch
by 23AdamHenry January 31, 2022

A period of time during which one must provide unnecessary care for a significant other because the individual is overly needy.
Avery had to miss the Boys to Men concert because it was the year of sponge baths with her worthless boyfriend.
by Slamb Doctor September 14, 2019

by tenequia January 5, 2008

A person showing signs of sun normal human ability and intelligence ,especially with impaired walking.
by Soup Dragon November 20, 2017
