1 definition by Jett Hiu

Top Definition

When there is an activity you are forced to do or did not want to do, you would say, "that is a sign up" because you didn't sign for the activity you are being forced to do

My mom told me to clean the poop out of the toilet, thats a sign up.

by Jett Hiu February 08, 2017

Buy a sign up mug!