"The Kids Rob a Train" is the 15th episode of the fourth season of the animated comedy series Bob's Burgers and the overall 60th episode, and is written by Steven Davis and Kelvin Yu and directed by Boohwan Lim and Kyounghee Lim.
They distract Ethan so Louise can climb under the cart and be wheeled all the way to the kitchen car at the front of the train.
However, the plan goes astray when the chef forces his way into the bathroom and the kids are unable to meet up with Louise.
They manage to climb back in, but Ethan is about to deliver the juice boxes and they have nowhere to hide the chocolate.
The sun's heat begins to melt the chocolate, causing it to slowly rain down on the kids just as Ethan and the chef leave.
The three gang up with Regular-Sized Rudy who is stuck in the juice caboose while his dad is on a date to liberate the bars of chocolate from the front of the train.
This made it the fourth most watched show on Animation Domination that night, losing to American Dad!, The Simpsons, and Family Guy with 4.17 million.