"Earn a badge" comes from a kids club called scouts where you earn a badge that you sow on your shirt for mastering a skill or doing certain things:
https://www.scouting.org/programs/boy-scouts/advancement-and...
So he's joking about earning a badge of being a hippy. Rubber tramp means live in a van (presumably a VW camper van).
"Earn a badge" comes from a kids club called scouts where you earn a badge that you sow on your shirt for mastering a skill or doing certain things:
https://www.scouting.org/programs/boy-scouts/advancement-and...
So he's joking about earning a badge of being a hippy. Rubber tramp means live in a van (presumably a VW camper van).