“Don’t look so shocked, little brother! This is a natural thing for siblings to do. Your pants are starting to look really uncomfortable. I promise I can make it feel better. Will you let me?”

tags: Let me be your busty sister, big sis,busty,topless,big tits,huge tits,sister,incest,fantasy,

from: http://bustysister.tumblr.com/post/68240956004