1 definition by Kountry
To carry out a task or operation vigorously, with a heightened urgency of purpose, or maximum efficiency.
"You're already late. You'd better pump ass!"
"You're really going to have to pump ass to finish those nachos before closing time."
"You're really going to have to pump ass to finish those nachos before closing time."
by Kountry August 18, 2011