How can i convince my parents to let me ge my monroe pierced?

Ok, my parents think i am to young for facial piercings but i really wat it done! See last summer when i was a year younger my mom was going to let me get my nose pierced but m dad said no so i couldn't get it done however tat summer my mom said she would rather me get my lip doe, so asked 4 my birthday if i could get my lip done and he said no because i was to young. So i have to some up with some really good reasons for hem to let me get my monroe pierced! please help.