In a mixing cup, whisk together the coffee, creamer, and sugar and set aside.
In a bowl using an electric mixer, whip the heavy whipping cream until stiff peaks form.
Add the marshmallow cream to the heavy cream and whip it together.
Put your hot fudge in a ziploc bag and snip off a small corner. Drizzle the hot fudge along the inside of your cup.
Add your ice and coffee mix to the blender. Blend together until the ice is crushed and thoroughly combined.
Place your marshmallow cream mix into a ziploc bag and snip off a corner of the bag. Pipe a bit of the marshmallow cream mix into the bottom of the cup. This is a personal preference, so place as much as you'd like into the cup.
Pour the coffee mixture over the marshmallow cream, then top with more marshmallow cream, a drizzle of hot fudge, and a sprinkle of graham cracker crumbs. Serve and enjoy!