Yes molasses does make you poop when you consume enough of it.
Molasses contains vitamins and minerals; magnesium which helps to make you poop and get your bowels moving.
I will sometimes consume a few tablespoons of magnesium when I'm feeling constipated or am constipated and when I take the 2 tablespoons of the molasses I usually need to poop within a few hours.
The blacks strap molasses is the better molasses for making you poop faster.
But even regular molasses can help you poop as well.
Some other things that can make you poop are eating oatmeal, eating bread, eating prunes, eating apples, eating bananas or drinking apple juice, drinking prune juice or just increasing your fiber intake.
The more fiber you intake the more you'll need to poop.