girl stuff 

An expression used when trying to express you are on your period or anything resisted to that subject

"Babe did I do something wrong" " no it's not you it's just girl stuff"

girl stuff by Areyoudumbbbbb January 3, 2017

Girl Stuff 

Fun things that girls do, like looking at rainbows and petting unicorns. This also includes liking ponies and playing with barbie dolls.

Man, they are talking about girl stuff, and not the fun girl stuff like unicorns and rainbows - Donut from Red vs Blue

Girl Stuff by RobinoFree April 28, 2011

little girl stuff 

of or relating to alchoholic beverages...
-shots
-beer
-vodka
a code word 4 underaged drinkers

yesterday, i had tons of little girl stuff!

little girl stuff by Lexy Leline August 15, 2006