Noun: To consume an inhuman amount of beef at a Japanese BBQ. Amalgamation of the word beef + the Japanese root word "kake", meaning to do something excessively or take something in great amounts.
Damn I'm full. That was one wild beefkake session. Now where are my shoes?
Quitting Time, whose up for a night of beefkake?
A: That new girlfriend of yours sure has an appetite.
B: Yeah, she sure likes a good beefkake now and again.
His face covered in grease, he belched loudly and declared that it had been the best bit of beefkake he'd ever partaken in.