Both Biggie and Mr. Dinkles are named after slangs referring to the male sex organ ("biggie" and "dinkle").
Biggie's case was called out in Trolls Holiday, when he accidentally exposes his genitals upon ripping off his shorts.
Similarly, Dickory follows an attitude that makes him appear to be like a "dick". While the term "dickory" was taken from the "Hickory Dickory Dock" nursery rhyme, it has also been used as an uncommon variation of the aforementioned slang.
During the "They Don't Know" sequence, Gristle and Bridget do some rather suggestive poses while dancing.