To take a dump.
by One eyed midget March 10, 2011

Taking a shit. "Cosbies" refers to the Cosby Show, in which Bill Cosby had approximately fifteen kids. You can replace "Cosby" with the name of one of the kids from the show, i.e. - "Dropping Off A Theo" to indicate a large dump, or "Dropping Off a Rudy" to indicate a smaller turd.
by JohnsoroATL December 21, 2004

by MOCO & P-Phat May 28, 2008

by no April 1, 2003

A variation of "Drop off the Cosby kids at the pool", whereas dropping off the Cosby kids and the pool means having diarrhea.
*storms for the bathroom* "OUT OF MY WAY!"
"Why? Do you have to drop off the Cosby kids at the pool?"
"Worse. I have to drop off the Cosby kids AND the pool!"
"Uh...okay, then. Good luck with that."
"Why? Do you have to drop off the Cosby kids at the pool?"
"Worse. I have to drop off the Cosby kids AND the pool!"
"Uh...okay, then. Good luck with that."
by NotCaptainSlow December 17, 2012

Dude, where's the bathroom. After that pizza and those 40 ouncers I've got to drop off the Cosby kids at the pool.
by Dirk Diggler December 29, 2002
