When you become a legal adult and you can make your own decisions but your parents or any one older than you thinks you are still a child.
"It's her eighteenth birthday so she's going to get a tattoo."
"She thinks she's so grown because its her eighteenth birthday."
"She thinks she's so grown because its her eighteenth birthday."
by Theimpracticaljokersarestilltr April 3, 2016
Get the eighteenth birthdaymug. The age at which a girl is just old enough to have sex with an older man without him becoming a registered sex offender.
by dilflover67 September 19, 2025
Get the Eighteenth Birthdaymug.