All the guys gas me up on the swim team All her friends, they don't know that I'm 16 I'm pretty psyched she's over every night I'm sorry if it ever pissed you off Well, she doesn't mind Driving home from campus for a younger guy I'm lying to my parents Said, "I'm out with my friends sleeping over again" But really it's just her and I alone Well she's 18, and she does what she likes Making out with strangers when she's bored with her life And she takes me to a whole 'nother high I wonder when she'll stop coming home I hope she doesn't leave me here alone She's out of class for the week on vacation I'm tryna take anatomy in her basement I'm stuck in math, she's drawing up a bath And sending videos to my phone And I kinda like Staying up 'til morning under candlelight And swimming with you naked So I blow off my friends just to see you again I wonder if your brother's catchin' on Well, she's 18, and she does what she likes Making out with strangers when she's bored with her life And she takes me to a whole 'nother high I wonder when she'll stop coming home She's 18, and she does what she likes Making out with strangers when she's bored with her life And she takes me to a whole 'nother high I wonder when she'll stop comin' home I hope she doesn't leave me here alone She is 18 She is 18 Ah-ah-ah-ah