Your childhood friend came to you
"hey dude, I found another battle for us!"
you're way to tired of those battles, it's probably just another card game
"check it out"
she suddenly takes off her shorts, revealing a fat ass you never noticed. she bounces it around as her big breasts jiggle too
"it's a 'sex battle'. Whoever cums first loses (and also becomes the other's sex slave). Come at me!"