A bathroom activity in which a group of people take a dump together, in seperate, multiple stalls. It is a social experience, since the taskers talk while on the can. It makes taking a dump even better.
Often done at schools, during a gym class or study hall.
Note: Can be spelled TASC as well. (Take A Shit Co-operatively)
"Hey, John! You want to go Task with me?"
"Sure, Steve! I've had to crap all day."