“From the tuna picture, I wonder if she is the string-thong [bikini wearing], salt-water-fishing chick, [who is] famous on youtube.”
Either that, or it is a play on that old joke. “I once caught a tuna in my string-thong bikini - how he got there I’ll never know!”
Or, perhaps the sentence reads better if you are drunk and driving backwards!?
I actually considered that maybe there’s a heretofore unknown species of tuna that behaves rather like the Amazonian Candiru and just swims up in there.
As I said, mindboggling. I’m still rubbing my eyes. My brain feels funny, lol.