Beerup is a mixture of maple syrup and beer. It is commonly made undercover in the forests of Maine, due to the fact that possession of beerup is considered highly illegal.
Yo dawg, we gon' go whip up a batch of beerup, you in?
A greeting, commonly used by those with inferior mental ability.
Person 1: BIDDLYWAP
Person 2: You're retarded....