It's not funny but grudgingly engaging.

I've never laughed at the "antics" of Noel Edmunds, Jeremy Beadle and all the other Candid Camera cunning stunts. Antics are all very well when it's Tom and Jerry or other cartoons but i've always felt very uncomfortable with any smug twat who thinks he's clever cos he can hoodwink the public. I think my view of  is a bit like this:

Boing Boing

Nevertheless, I have to grudgingly concede that this trick played with twin twins is quite good: via Living the Scientific Life (Scientist, Interrupted).