...every time DH gets back downstairs from spending 45 minutes on the sodding loo!
Three times a day he does it;he has no medical issues, he just likes the 'peace and quiet' and sits on there playing games on his phone. It really grates on me as he always does it first thing in the morning when the DCs need their breakfast, so I end up sorting them out. Then he'll usually disappear once during the day and then after tea in the evenings when the kitchen needs tidying.
I told him this morning that each time he does it from now on I'm going to take 45 minutes for myself too, and lets just say it didn't go down well and I'm just trying to cause arguments etc etc.