an irrational response to your mother's comments that make more sense than your brain can accommodate
"I thought we were going to spend the day together for Father's Day"
"Your Dad has been here all day, he worked in the yard for hours and just went to hit golf balls with your brother, they will be back by six"
"Oh, so I have been here all day, but he can go off with my brother" some more words of unkindness and then:
stfu, i am leaving