The Simpsons are watching a television show , Before they were famous,talking about Rainier Wolfcastle and his first appearance in an Austrian commercial about a brand of bratwurst.
Mein bratwurst has a first name, it's
Mein bratwurst has a second name, it's
Behind the laughter
The song and title are a parody of the commercial jingle "My bologna has a first name, it's 'O-S-C-A-R'..." from the brand Oscar Mayer which also sold bratwursts.