two (or more) girls who are engaged in sexual activities with one another. they could be making out, rubbing licking and sucking each others tits, rubbing licking and fingering each others wet pussies, rubbing licking or sucking each others clits, fucking each other with a strap on or dildo, sharing a dildo/vibrator, or simply watching or helping each other get off. girl on girl is very erotic to watch and participate in.
the girls do not have to be, but usually are lesbians or bisexual.
by addy April 9, 2005
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the makings of a girl on girl I.E licking touching "vigerous" workout ;)
as seen in some men's magazines and Lesbian magazines see lesbian
Jimmy: omg.... DAN DO YOU SEE THAT GIRL ON GIRL action in there!?
Dan: hellz yeah
by Soumbudy March 23, 2005
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katie, heather, and adrianna went girl on girl on girl

i had some hot girl on girl on girl action last nite ;)
by Daydreame August 12, 2010
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When two naked girls kiss rub each other's pussy's sissor and stick dildo's in each other.
Chad's Wife : I cannot believe that Chad would cheat on me I thought we were in love!
Kiersten : Yeah he is an asshole for the most part so would you like to pay him back with some Girl On Girl before he get's home?
Chad's Wife : Sure I haven't had any pleasure for quite some time!
Kiersten : Uh! Uh! Uh! Uh! Uh! Uh! Uh! Uh! Uh! Uh!
Chad's Wife : Uh! Uh! Uh! Uh! Uh! Uh! Uh! Uh! Uh!
Kiersten : Oh hi Chad I was just pleasuring your wife!
Chad : What The Fuck!
Chad's Wife : Yeah paybacks are a bitch!
Chad : Oh no ive been wanting a 3 way for quite some time just give me a second to get naked!
Kiersten : Sorry Chad not this time it's just Girl On Girl you can't join in silly!
Chad : But I can watch! Ahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh!
by SlopNChop February 10, 2017
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A song that is the lesbian/Bisexual/Pansexual anthem by the one and only Lesbian Jesus(Hayley Kiyoko).
Person 1:Have you heard "Girls like Girls"?
Person 2: Yeah of course it's made by Lesbian Jesus!
by Sunvirgo_ August 26, 2019
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Every mans (or lesbians) dream of seeing on HD t.v., or even better, in real life.
Man 1: Did you see what was on t.v. last night?

Man 2: No, what was it?

Man 1: You missed some really hot girl on girl action!!!
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Girls who attend Christchurch Girl's High School. The students there are commonly known as margarine legs, but also as the hottest girls in Christchurch. Some say you actually have to pass an attractiveness test to get in, and others that the out-of-zone students accepted purely on aesthetics. Whatever the truth is, everyoe knows that girl's high girls party, dance and kiss like no other. Very highly sought after at CBHS and Christ College (syrups) dances. You pretty much only have to say she goes/went to girl's high for it to be assumed that she's (at the very least) fuckable.
Boy 1: Hey, did you hook up with anybody at the dance?
Boy 2: Yup. She's a girl's high girl
Boy 1: Shot bro! (followed by much congratulations from any surrounding males)
by KiwiChickee December 12, 2007
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