Im back in the classroom im wearing belt and jeans today so theres no chance my buttcrack will come out... unaware to me my class are sniggering my buttcrack is well and truly out... I fart unaware over and over again and my jeans fall down lower and lower revealing more of my asscrack and glimpse of my pussy... I bend over doing class work and fart over and over again unaware to me my butt-crack in right in my students face... I explain that i have not farted and my buttcrack can not be seen as i am wearing a belt.. I then prove its not out my reaching around and my hand touches my bare ass cheek... OMG its happended again my buttcrack is out bigger than before im so humilated