1- in english; a loyal and slick friend of the female gender
2- literally means "little sister/girl" in mandarin
one should always be thankful if they are lucky enough to have a xiao mei mei
"Oh, please touch my xiao mei mei"
"No way, that shit is so stinky. Get your xiao mei mei out of my motherfuckin' face"
"No bitch, lick it"
"Okay"