In the flashback to Beatrice giving Bojack the painting, his fridge is shown to be full of lemons and sugar. Putting some sugar on a lemon is what Honey Sugarman called a good healthy girl snack when Beatrice was a child.
When Corbin Creamerman is thrown up on by the young Beatrice in 1963 while walking in the park, he screams like the goat in the viral video also known as "The Screaming Goat."
Butterscotch, father of BoJack, apparently also gives women a phone number to a random restaurant. The number BoJack uses is to a sandwich shop in Temecula while Butterscotch, a pizza parlor in Brownsburg.
When Butterscotch Horseman flicks away his cigarette butt outside Beatrice's debutante ball, glass is heard smashing.