Judge Judy knows. Judge Judy would probably roll too. Who would not want to have her as a training partner?

When your training partner takes too long to fix the belt, hair or gi pants.

When your instructor teaches worm guard.

When your training partner gives 100% resistance while drilling a new technique.

When your training partner tries to submit you after the time has run out.

When your training partner talks too long about winning the only match she had at a tournament.

When a lower belt corrects your technique.

When you are about to submit your training partner; he stops and tries to coach you how to finish the submission in order to avoid tapping.

When your least favorite training partner asks to roll.

When your training partners talk about how many gis they have.