[Repeal The 17th]

Red flags do not mean to stay out of the water.
I spent last week at Myrtle Beach.
1 red flag = waist deep
2 red flags = knee deep

[Freedom'sWorthIt]

With the record of drownings this year along the NC Coast, red flags are a warning, either way, that the waters are dangerous.

[rolling_stone]

https://www.townofwrightsvillebeach.com/157/Rip-Current-Safety

red rough conditions may be life threatening to all who enter
double red water is closed to public use.
california
http://www.seecalifornia.com/beaches/beach-colors-flags.html

[Hillarys Gate Cult]

A blue flag means that somebody lost his penis.

- Family Guy reference.

[trebb]

I did a lot of body surfing when stationed at Myrtle Beach in the mid-late ‘70s....was shocked at how a mid-sized wave could throw you around as if it was a locomotive....did a bit of bouncing off the bottom from time to time.