Besides the condom, which is another barrier method of birth control?

There are a few!  there is one called a nuva ring, it gets done monthly, they insert it inside the top of the vagina..  There's the daily pill, that you take.  There's a weekly patch you change, but it's actually proven to be not very affective. There is a shot, you must get that every 3 months.  An IUD, it like a little that they will stick inside you as well and it shaped like a T, you'll have that changed every 10 years.  Hope that helped!

The answer i think would be diet coke