If the girl is old enough to have 'grass on the field' than she has reached puberty and has pubic hairs, making her 'game'.
"is your girl old enought?"
"Hey... if there is grass on the playing field, then play ball"
by bhgtbtbhtbhtnh July 26, 2006
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A term basically saying that it's alright to at least be attracted to a person as long as they've gone past puberty. Obviously "grass" refers to their "bush" or pubic hair. Would typically be applied to, for instance, a girl maybe 13 years old and up. Can often be used in reference to actual sex (intercourse) but not necessarily.
Man#1: What's the youngest chick you would ever be into at your age? I mean what do you think is "okay" to fantasize about?

Man#2: Hey man. Like my coach always said: if there's grass on the field, it's time to play ball.
by Interex March 19, 2004
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if a girl is old enough to have pubic hair (shaved or unshaved) they are old enough to have sex.
Bob: Do you think Mary is old enough to shag?
John: If there's grass on the field play ball
by Grass May 12, 2004
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If an underage girl has reached puberty, she may be considered appropriate for sexual activity. The reference to "grass on the field" is a metaphor for pubic hair, meaning that any girl who has reached sexual maturity, may be an appropriate sex partner.
if there's grass on the field play ball
by Laura Owen September 20, 2006
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Traditionally, used to denote the beginning of (American) baseball season practice anxiously awaited by enthusiasts each springtime: If there was grass growing, then the season had progressed enou gh past winter to start the new season: "play ball!" More recently, it has become a slang inferring statutory laws regarding underage females did not, in practice, realistically apply and that instead, the presence of pubic hair (grass) indicated sufficient maturation to begin sexual activity (play ball).
"I know your sister's only twelve, but I go by baseball, not age, "If there's grass on the field, play ball!"
by Azi0056 February 17, 2019
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A phrase meaning that as long as the girl or boy has begun growing pubic hair (grass on the field), then they are an acceptable person to have sex with (plays)- regardless of age.
Dude, your sister is looking hot lately!
Asshole! She's 10!
Hey, grass on the field plays.
You're sick man...
by Captain_G-Force February 28, 2018
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