What should i do when im the only girl?

my school has a lot of school activities, we have a dance almost every month, holiday parties, late starts, etc. Usually when we have such things like that we don't have afternoon classes or get released early. When having those extra hours i usually get high with my friends because some of them live really close to the school or we just go to this canyon near our school. Sometimes i could be the only female their. We don't travel in a big crew there would be 8 or 10 of us, sometimes there would be 3 or 6 other females. I usually don't twisted if i am the only female their. It's not like i don't the guys i have know some of them for 2 years and the others for 3 but, my friends are horny perverts and it gets worst when their high. I don't tend to stay very long 10 or 20 minutes.