There is fotografic evidence that sometimes I don't even wear bikini bottoms.
FREUD
Marcia took the famous picture when Ferd was in the early days of developing his streamlining skills.
You have heard of using small strands of yarn to check airflow, well he had a similar method all over that he was testing.
However well it worked, he was never able to sell the concept, but has never given up on the idea.