WHAT THE WHAT???!!!

What happened in A Glitch is a Glitch with PB and Jake??!!! SERIOUSLY??!!! Is Jake cheating on LR or something? It was only a thing with hands, but still! Are the creators not telling us something??!!! SOMEBODY PLEASE GUESS WHAT'S GOING ON, I MUST KNOW!!!! Or at least get a good guess. WHO ELSE WAS SHOCKED?