Person 1 and Person 2 are married.
Both are working from home, Person 1 finished at 1pm to go to the gym, Person 2 is still slogging away with paperwork. Person 1 returns from the gym and Person 2 is still doing paperwork.
The children of Person 1 and Person 2 need picking up from school. Its pouring with rain. Normally Person 2 would pick them up, but Person 2 asks Person 1 if they can do it because they can drive, and person 2 is still very busy.
Person 1 then surfs on Ebay for a bit, before finishing off some work. Person 2 comes home from school drenched. Person 1 takes one of the DC's to an out of school club, then goes to Badminton.
Person 2 thinks that Person 1 should have helped them out by doing the school run. Person 1 thinks that the fact that they took DC to an after school club means that they are equal.