I’m pretty sure they’re talking about catching pubic lice (genital crabs) either due to sleeping around, or the Myrtle Beach area being kind of shady.

I went there with my family when I was a kid, and yeah… Our hotel was fine but the place was giving old, and I’ll never forget this mom who let her kids play in a nasty ass abandoned jacuzzi pool that was off-colored and had cigarette butts in it…