See more from Britain’s Got Talent at http://itv.com/talent
It takes a lot to get a reaction from Simon but one act leaves him choked.
Fortunately David is on hand with a Heimlich that looks suspiciously like a cuddle.
SUBSCRIBE: http://bit.ly/BGTsub
Facebook: http://www.facebook.com/BritainsGotTalent
Twitter: http://twitter.com/GotTalent