The supermodel had the fake bogey coming out of her left nostril as a trick on two boys she was auditioning for her show to see if they would tell her about it. 'I think it's funny - but it's snot,' she joked in her introduction to the skit.
She then started eating a sugar-coated cake - after her doctor called to warn sugar would create more 'giant boogers' - and then sneezed into the pile of cakes, covering the boys.
Heidi's new show plays tricks on kids - often with her being the real butt of the joke - to see their often hilarious responses.