Green with envy after a BGMT caller asks Simon a question instead of him, David storms in a strop!
Lured back on stage he straddles his Simon and attempts to get him dancing as only he knows how!
See more from Britain’s Got Talent at http://itv.com/talent
SUBSCRIBE: http://bit.ly/BGTsub
Facebook: http://www.facebook.com/BritainsGotTalent
Twitter: http://twitter.com/GotTalent
Download the BGT mobile app: http://bit.ly/BGTapp
Watch full episodes on ITV Player (UK ONLY): http://www.itv.com/itvplayer