Friends with Burger-fits - S5-E3
Continuity mistake: After Mike and Mort warn Bob about the 5-lb burger at Dusty's Feedbag, Bob rushes out to save Teddy from himself. When Bob arrives and opens the restaurant's doors, there's a variety of condiments on Teddy's table in the wide shot, but in the next close-up, all the condiments have vanished.
Friends with Burger-fits - S5-E3
Other mistake: At the start, Tina, Gene, and Louise announce their new hobby, and Gene holds the glass jar. When Louise says, "Ha-ha, aliens, we farted on you," note the animation of Gene's hands and the glass jar are out of sync, making the jar appear bizarre.
Friends with Burger-fits - S5-E3
Other mistake: When the Belcher kids share their idea about canning, Louise places one adhesive label on the jar. In the following scenes with the kids, this jar changes its direction between shots and also mid-shot, so the label is facing out no matter the angle. Such as, when the kids go to the walk-in cooler after lowering the temperature the night before, Louise picks up the jar and its one single label always faces out.
Friends with Burger-fits - S5-E3
Other mistake: When Linda checks on all the kids in the walk-in cooler, she looks down and sees the "amazing" ice floor. In the next shot of Linda's reflection, as she exclaims, "Oh, God, look at it shimmer," Linda's reflection is not backwards.
Answer: It's a made up song for the show. It's a synth version of what the kids sang in Mr. Frond's video at the beginning of the episode. "Let's Swap Eyes."
Bishop73