I just traveled to France on 767 and there are only 2 bathrooms for business class. All of the coach flyers were using the business class bathrooms and this has been happening a lot lately. With only four bathrooms in coach, there are not enough to go around. The flight attendeants do not want to police the situation and I do not blame them. Some tense moments telling coach passengers to wait for the coach bathrooms. One lady wet her pants when the lines were too long. On a 767 we were 5 deep in business waiting in line. I am thinking of sneaking into first and upgrade into first class bathroom. Maybe they should offer special bathroom chits for upgrades to the next higher class bathrooms. Next time I will fly a 777 or 747....