At the end of Pumping Iron, Arnold is smoking a fat doobie, and has three pieces of fried chicken on his plate (all the bodybuilders are inside the same room and it happenned to be Lou's birthday), with some wine. This is right after Arnold had won the '75 Olympia. Essentially, he tells everyone to shut up, b/c he wanted everyone to sing Happy Birthday to Ferrigno.
It's funny as sh*t, b/c after they all sing to him, Arnold demands a speech (LOL. You know Lou had a really bad speech impediment back then, b/c of his deafness), and Lou says "I just wanna eat my cake" <---Sounding like a deaf guy talking kind of deal (LOL. I'm sorry, I'm not making fun of deaf people it was just funny....I'm going to hell....

)