On a MUSH (sort of like a text-based MMO), Consensual Roleplay means that your character will not get into any sticky wickets that you do not want him/her to get in. You control your destiny, and if Quickswitch wants to murder you with his space-puma jaws, you can say no. Alternately, you can't touch Alpha Q in the swimsuit area without his written permission.
"You can't kill Cliffjumper, Scourge! He doesn't consent. We have a 'consensual role play' policy! Learn that shit!"
by Cyclonus the Warrior, and his Armada February 11, 2008