It's a possibility that your stool (shit) could turn black from popping too many pills, but this isn't specific to Ecstasy and is due to a kidney/liver infection; it's highly unlikely that anyone would produce such a condition due to the usage of pills alone...
Black is black, I want my baby back It's grey, it's grey, since she went away, oh oh What can I do, 'cause I, I'm feelin' blue If I had my way, she'd be here today But she'd go in time, and leave me to cry again, oh no What can I do, 'cause I, I'm feelin' blue I can't choose, it's too much to lose when our love's too strong Maybe if she would come back to me, then I can't go wrong Bad is bad, that I feel so sad It's time, it's time, that I felt peace of mind, oh oh What can I do, 'cause I, I'm feelin' blue I can't choose, it's too much to lose when our love's too strong Maybe if she would come back to me, then I can't go wrong Black is black, I want my baby back It's grey, it's grey, since she went away, oh oh What can I do, 'cause I, I'm feelin' blue 'Cause I, I'm feelin' blue, 'cause I, I'm feelin' blue