"Banana Free" is our fun way of saying penis-free sex or non-penetrative sex. This includes any kind of sexual activity not involving penis-in-vagina sex, whether its between two gals or anyone else. "All me" is masturbation. As to the other one we get a lot of questions about, "I'm down" means that you're interested in having sex, perhaps feeling a little flirty or frisky.
What's the deal with “Banana Free” and “All me”?
