a form of internet slang combining the words "yes" and "bestie," the latter of which is commonly used on stan twitter. it is to be used either as an encouragement or as an affirmative, typically in place of the phrase "yes bestie."
When shit starts expanding in your intestines before it is ready to come out. The step right before prairie-dogging and two steps before the loaf is ready to be taken out of the oven.
Extremely tight jeans. They are called yeasties b/c they are bound to cause a yeast infection! ; A term originally coined to refer to women whose pants were so tight it might give them the "yeasties". It seems to be applicable to men in growing numbers these days.
"The New Boyz love to wear yeasties and that is not sexy!"
"Man those yeasties are too tight!!!"
"Would you date a man in yeasties tighter than yours?"
"Do you see that girl in them yeasties?