Robert: I really wish I can describe how I felt hanging out with you... not yesterday, but the day before yesterday.
Mia: You mean befesterday?
Robert: Wow, what a genius, concise word that the English Language does not have yet...
Someone who eats ass aka A rimmer
Comes from using "beefy" as a description of a fart
Very good to fool people into admiting they rim people without knowing