(I’m just speculating for fun here)

Based on the sash, this is a woman celebrating a birthday or bachelorette. Due to the pattern on it I’m leaning toward birthday, as bachelorette sashes tend to be solid white.

She’s probably hammered, having been day drinking since 10AM (that’s what those sashes are for; to give lunch goers a clear visual warning sign.) and based on the shadow line and assumed time of year (I’m just assuming it’s not northern California in winter, but it might be) that is probably like 4-5pm, so she’s been drunk for a solid while, probably in the sun.

So very drunk, good mood woman gets an idea that twerking poolside (very possibly to no music or music played off a shitty phone) is the way to keep the party going (a shockingly common sort of happening at those two categories of sash-wearing events). And for that one guy, far far too old to have any shame left about being a creep, she’s absolutely right.

This makes me wonder, though, if those dumb attention seeking sashes exist outside of the us (baseball hat in background seems to indicate US)… I’m sure they must in some form, but I really sort of hope it’s just here that people are so self absorbed as to think a birthday or wedding is a free pass to be a public disaster. (Also there used to be a trend of wearing a sash so strangers would staple money to it, but thankfully that seems to have died…)