Humbug (sweet)
From Tardis Wiki, the free Doctor Who reference
A humbug was a sweet carried by the Fourth Doctor. He offered one to Gatherer Hade after their meeting adjourned. (DW: The Sun Makers)
Behind the scenes
Despite the Doctor calling it a humbug, the sweet taken by Hade was in fact a jelly baby. This incident is similar to one in Image of the Fendahl where the Doctor offers a jelly baby that is in fact a liquorice allsort.
