1972 Wading in the Gulf of Mexico.
This was AFTER visiting the St. Louis Zoo and the incident with the door to the aviary. My sister was kind enough to help me "wade" in the gulf with one foot.
I think this was our first visit to the Gulf of Mexico. I remember that there were blobs of sticky black oil goo on the beach. We wanted to get our feet wet so we walked/hopped through it. Again, I was wearing my FAVORITE outfit ever.