Britain's Got Talent hosts Ant McPartlin and Declan Donnelly watched from the sidelines as The Handersons gave their performance - but they were more involved than they thought.
Shortly after Amanda Holden had revealed she desperately wanted to see a good puppet act, the group of four - which featured the parents and two children - broke out into a song.
Luckily, their track also brought in a comedic edge as the group brought their nan who was watching from the balcony, and sang about how they were so happy she was back.
In a shocking twist, it was soon revealed that nanna was actually in prison - and that's why she was away so long... because of her sticky fingers.
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